Jeffrey L. Krolik | Scholars@Duke

Jeffrey L. Krolik
Professor of Electrical and Computer Engineering

Jeffrey Krolik is Professor of Electrical and Computer Engineering at Duke University in Durham, NC. Canadian-born, he received his Ph.D. in Electrical Engineering from the University of Toronto in 1987. He began his academic career as an Assistant Professor of Electrical and Computer Engineering at Concordia University in Montreal. Interested in signal processing applications in the ocean sciences, he joined the Scripps Institution of Oceanography, University of California San Diego as an Assistant Research Scientist in 1990. At Scripps, he developed physics-based sensor array processing methods that exploit multi-path underwater acoustic propagation. Since coming to Duke in 1992, he has broadened his research interests to include statistical signal processing for surveillance radars and microwave remote sensing, active and passive sonar, and medical imaging. Some of his current projects include the development of aircraft height finding for over-the-horizon HF radar, through-the-sensor environmental monitoring of near-surface atmospheric conditions using a shipboard microwave radar, active sonar array shape estimation from reverberation, and functional magnetic resonance imaging algorithms which are robust to head motion. As a consultant, he has worked for the Office of Naval Research, the Defense Advanced Research Projects Agency (DARPA), the Air Force Rome Laboratories.

Current Research Interests

Physics-based and statistical signal processing, sensor array processing, radar and sonar systems, pervasive distributed processing

Current Appointments & Affiliations

Professor of Electrical and Computer Engineering, Electrical and Computer Engineering, Pratt School of Engineering 2001

Contact Information

3465 CIEMAS, Durham, NC 27708
Box 90291, Durham, NC 27708-0291
jk@ee.duke.edu (919) 660-5274
http://www.ee.duke.edu/~jk/

Background
Education, Training, & Certifications
- Ph.D., University of Toronto (Canada) 1987
- M.A., University of Toronto (Canada) 1983
- B.A., University of Toronto (Canada) 1980
Duke Appointment History
- Associate Professor of Electrical Engineering, Electrical and Computer Engineering, Pratt School of Engineering 1996 - 2000
- Associate Professor of Electrical Engineering, Electrical and Computer Engineering, Pratt School of Engineering 1992 - 1996
Recognition
In the News
- JUN 18, 2013
  
  Pratt Engineers Awarded Four Department of Defense Grants
Research
Selected Grants
- Non-Recurrent Wideband Continuous Active Sonar awarded by Office of Naval Research 2012 - 2014
- MIMO Radar Signal Processing in Complex Propagation Environments awarded by Office of Naval Research 2012 - 2013
- Active and Passive Acoustic Scatterer Discrimination in an Ocean Waveguide awarded by Office of Naval Research 2008 - 2011
- Multipath Space-Time Adaptive Radar Signal Processing awarded by Office of Naval Research 2008 - 2011
- Autonomous Wide Aperture Cluster for Surveillance (AWACS): Adaptive and Collaborative Signal Processing awarded by Office of Naval Research 2005 - 2010
- RF Time-Reversal Methods for Imaging & Detection awarded by Office of Naval Research 2006 - 2009
- Environmental Exploitation, System Optimization, Signal Processing, and CONOPS awarded by Office of Naval Research 2008 - 2009
- Adaptive Signal Processing for Advanced Over-the-Horizon HF Radars awarded by Office of Naval Research 2005 - 2008
- Wide-Band Multipath Depth Estimation and Partially Adaptive Space-Time Processing for Active Sonar awarded by Office of Naval Research 2004 - 2008
- To Support Distributed Microphone Array Testbed for Speaker Separation and Localization 2007 - 2008
- Broadband Passive Sonar Detection by Time-Frequency Striation Processing awarded by Office of Naval Research 2005 - 2006
- Physics-Assisted Space-Time Adaptive Multipath Clutter Mitigation awarded by Office of Naval Research 2002 - 2006
- Dynamic Multipath Suppression of Endfire Interference with Towed Passive Sonar Arrays awarded by Office of Naval Research 2003 - 2005
- Entropy-based Adaptive Clutter Mitigation and Frequency-Hopped Altitude Estimation 2004 - 2005
- Efficient Representation of Oceanographic Uncertainty in Passive Sonar Performance Prediction awarded by Office of Naval Research 2001 - 2004
- Space-Time Adaptive Processing and Array Shape Estimation for Towed Active Sonar Arrays awarded by Office of Naval Research 2002 - 2004
- Signal Processing Development and Testing for ROTHR awarded by Office of Naval Research 2002 - 2003
- Clutter Mitigation for Multi-Static Over-the-Horizon HF Radar awarded by Office of Naval Research 2002
- Space-Time Matched-field Depth Discrimination for Active and Passive Sonar awarded by Office of Naval Research 2000 - 2002
- Electromagnetic Matched-field Processing for Over-the-Horizon Radar awarded by Office of Naval Research 1999 - 2002
- Multi-Ping Matched Field Depth Discrimination for Low Frequency Active Sonar awarded by Office of Naval Research 1998 - 2000
- Multi-ping Matched-field Depth Discrimination for Low Frequency Active Sonar awarded by Office of Naval Research 1998 - 2000
- (96-0019) Robust Electromagnetic Sensor Array Processing under Stochastic Propagation Conditions awarded by Office of Naval Research 1993 - 1998
- (97-0269) Robust Electromagnetic Sensor Array Processing under Stochastic Propagation Conditions awarded by Office of Naval Research 1993 - 1998
- (97-0274) Robust Electromagnetic Sensor Array Processing under Stochastic Propagation Conditions awarded by Office of Naval Research 1993 - 1998
- (98-0173) Robust Electromagnetic Sensor Array Processing under Stochastic Propagation Conditions awarded by Office of Naval Research 1993 - 1998
- (97-0854) Tropospheric Refractivity Estimation Using Radar Clutter from the Sea Surface awarded by National Science Foundation 1994 - 1998
- (94-0433) Matched-field Localization in a Random Ocean Channel awarded by Office of Naval Research 1993 - 1996
- (95-0337) Matched-field Localization of Transient Sources in a Random Ocean Channel awarded by Office of Naval Research 1993 - 1996
- (93-0386) Matched-Field Source Location in a Random Ocean Channel awarded by Office of Naval Research 1993 - 1995
- (93-0705) Matched-field Localization of Transient Sources in a Random Ocean Channel awarded by Office of Naval Research 1993 - 1995
- (94-0343) Matched-field Source Localization in a Random Ocean Channel awarded by Office of Naval Research 1993 - 1995
Publications & Artistic Works
Selected Publications
- Academic Articles
  - Young, A. H., H. A. Harms, G. W. Hickman, J. S. Rogers, and J. L. Krolik. “Waveguide-Invariant-Based Ranging and Receiver Localization Using Tonal Sources of Opportunity.” Ieee Journal of Oceanic Engineering, January 1, 2019. https://doi.org/10.1109/JOE.2018.2883855.
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  - Soli, J., G. Hickman, and J. Krolik. “Range-Velocity Estimation Bounds for Nonuniform Sonar Comb Signals.” Ieee Transactions on Aerospace and Electronic Systems 54, no. 6 (December 1, 2018): 2980–91. https://doi.org/10.1109/TAES.2018.2836558.
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  - Ramirez, J., and J. L. Krolik. “Synthetic aperture processing for passive co-prime linear sensor arrays.” Digital Signal Processing: A Review Journal 61 (February 1, 2017): 62–75. https://doi.org/10.1016/j.dsp.2016.07.021.
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  - Xu, C., A. Harms, and J. Krolik. “MIMO space-delay adaptive processing for wide-area indoor human motion classification.” Ieee Transactions on Aerospace and Electronic Systems 52, no. 3 (June 1, 2016): 1384–98. https://doi.org/10.1109/TAES.2016.150250.
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  - Cnaan-On, I., S. J. Thomas, J. L. Krolik, and M. S. Reynolds. “Multichannel Backscatter Communication and Ranging for Distributed Sensing With an FMCW Radar.” Ieee Transactions on Microwave Theory and Techniques 63, no. 7 (July 1, 2015): 2375–83. https://doi.org/10.1109/TMTT.2015.2439678.
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  - Odom, J. L., and J. L. Krolik. “Passive Towed Array Shape Estimation Using Heading and Acoustic Data.” Ieee Journal of Oceanic Engineering 40, no. 2 (April 1, 2015): 465–74. https://doi.org/10.1109/JOE.2014.2318531.
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  - Yu, J., and J. Krolik. “MIMO adaptive beamforming for nonseparable multipath clutter mitigation.” Ieee Transactions on Aerospace and Electronic Systems 50, no. 4 (October 1, 2014): 2604–18. https://doi.org/10.1109/TAES.2014.130451.
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  - Li, L., and J. L. Krolik. “Simultaneous target and multipath positioning.” Ieee Journal on Selected Topics in Signal Processing 8, no. 1 (February 1, 2014): 153–65. https://doi.org/10.1109/JSTSP.2013.2289949.
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  - Cnaan-On, I., S. J. Thomas, M. S. Reynolds, and J. L. Krolik. “Multichannel radar backscatter communication and localization.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, January 1, 2014, 76–80. https://doi.org/10.1109/ICASSP.2014.6853561.
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  - Harms, A., G. Hickman, M. Papazoglou, and J. Krolik. “Predicting the array gain of partially coherent planar HF arrays.” Ieee National Radar Conference Proceedings, January 1, 2014, 1456–59. https://doi.org/10.1109/RADAR.2014.6875830.
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  - Hickman, G., J. L. Krolik, and D. B. Kilfoyle. “Cramer-Rao bounds for HF source geolocation with a vector sensor array.” Ieee National Radar Conference Proceedings, January 1, 2014, 936–39. https://doi.org/10.1109/RADAR.2014.6875726.
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  - Ramirez, J., J. Odom, and J. Krolik. “Exploiting array motion for augmentation of co-prime arrays.” Proceedings of the Ieee Sensor Array and Multichannel Signal Processing Workshop, January 1, 2014, 525–28. https://doi.org/10.1109/SAM.2014.6882458.
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  - Xu, C., and J. Krolik. “MIMO RF probe for wide-area indoor human motion monitoring.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, January 1, 2014, 6047–51. https://doi.org/10.1109/ICASSP.2014.6854765.
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  - Odom, J. L., and J. L. Krolik. “Adaptive beamforming with augmentable arrays in non-stationary environments.” 2013 5th Ieee International Workshop on Computational Advances in Multi Sensor Adaptive Processing, Camsap 2013, December 1, 2013, 324–27. https://doi.org/10.1109/CAMSAP.2013.6714073.
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  - Yu, J., and J. Krolik. “Adaptive phase-array calibration using MIMO radar clutter.” Ieee National Radar Conference Proceedings, October 7, 2013. https://doi.org/10.1109/RADAR.2013.6586120.
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  - Odom, J. L., and J. Krolik. “Heading and hydrophone data fusion for towed array shape estimation.” Proceedings of Meetings on Acoustics 19 (June 19, 2013). https://doi.org/10.1121/1.4800390.
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  - Li, L., and J. L. Krolik. “Cramer-Rao performance bounds for simultaneous target and multipath positioning.” Conference Record Asilomar Conference on Signals, Systems and Computers, January 1, 2013, 2150–54. https://doi.org/10.1109/ACSSC.2013.6810689.
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  - Li, L., and J. L. Krolik. “Simultaneous Target and Multipath Positioning via multi-hypothesis single-cluster PHD filtering.” Conference Record Asilomar Conference on Signals, Systems and Computers, January 1, 2013, 461–65. https://doi.org/10.1109/ACSSC.2013.6810319.
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  - Odom, Jonathan L., Jeffrey L. Krolik, and Jeffrey S. Rogers. “Maximum-likelihood spatial spectrum estimation in dynamic environments with a short maneuverable array..” The Journal of the Acoustical Society of America 133, no. 1 (January 2013): 311–22. https://doi.org/10.1121/1.4770233.
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  - Li, L., and J. L. Krolik. “Simultaneous target and multipath positioning with MIMO radar.” Iet Conference Publications 2012, no. 603 CP (December 1, 2012). https://doi.org/10.1049/cp.2012.1585.
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  - Yu, J., M. Reynolds, and J. Krolik. “Adaptive baseband interference suppression in multi-channel heterodyne radar receivers.” Iet Conference Publications 2012, no. 603 CP (December 1, 2012). https://doi.org/10.1049/cp.2012.1584.
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  - Yu, J., and J. Krolik. “MIMO multipath clutter mitigation for GMTI automotive radar in urban environments.” Iet Conference Publications 2012, no. 603 CP (December 1, 2012). https://doi.org/10.1049/cp.2012.1565.
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  - Odom, J. L., and J. L. Krolik. “Broadband field directionality mapping with spatially-aliased arrays.” Proceedings of the Ieee Sensor Array and Multichannel Signal Processing Workshop, October 12, 2012, 449–52. https://doi.org/10.1109/SAM.2012.6250535.
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  - Li, L., and J. L. Krolik. “Target tracking in uncertain multipath environments using Viterbi data association.” Fusion 2011 14th International Conference on Information Fusion, September 13, 2011.
  - Li, L., and J. L. Krolik. “Vehicular MIMO SAR imaging in multipath environments.” Ieee National Radar Conference Proceedings, September 12, 2011, 989–94. https://doi.org/10.1109/RADAR.2011.5960684.
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  - Lee, W. W., and J. L. Krolik. “Space-time adaptive processing for range-folded spread-Doppler radar clutter mitigation.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, August 18, 2011, 2772–75. https://doi.org/10.1109/ICASSP.2011.5947059.
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  - Goldhahn, Ryan, Granger Hickman, and Jeffrey Krolik. “A waveguide invariant adaptive matched filter for active sonar target depth classification..” The Journal of the Acoustical Society of America 129, no. 4 (April 2011): 1813–24. https://doi.org/10.1121/1.3557041.
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  - Hickman, G., and J. L. Krolik. “MIMO GMTI radar with multipath clutter suppression.” 2010 Ieee Sensor Array and Multichannel Signal Processing Workshop, Sam 2010, December 20, 2010, 65–68. https://doi.org/10.1109/SAM.2010.5606764.
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  - Rogers, J. S., and J. L. Krolik. “An online method for time-varying spatial spectrum estimation using a towed acoustic array.” Conference Record Asilomar Conference on Signals, Systems and Computers, December 1, 2010, 1837–41. https://doi.org/10.1109/ACSSC.2010.5757894.
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  - Rogers, Jeffrey S., and Jeffrey L. Krolik. “Time-varying spatial spectrum estimation with a maneuverable towed array..” The Journal of the Acoustical Society of America 128, no. 6 (December 2010): 3543–53. https://doi.org/10.1121/1.3505121.
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  - Yu, J., and J. Krolik. “Quadrature slow-time MIMO radar with experimental results.” Conference Record Asilomar Conference on Signals, Systems and Computers, December 1, 2010, 2134–37. https://doi.org/10.1109/ACSSC.2010.5757927.
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  - Li, L., J. Yu, and J. Krolik. “Software-defined calibration for FMCW phased-array radar.” Ieee National Radar Conference Proceedings, July 30, 2010, 877–81. https://doi.org/10.1109/RADAR.2010.5494498.
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  - Yu, J., M. Reynolds, and J. Krolik. “An indoor s-band radar receive array testbed.” Ieee National Radar Conference Proceedings, July 30, 2010, 712–17. https://doi.org/10.1109/RADAR.2010.5494528.
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  - Hickman, G., and J. L. Krolik. “MIMO field directionality estimation using orientation-diverse linear arrays.” Conference Record Asilomar Conference on Signals, Systems and Computers, December 1, 2009, 146–50. https://doi.org/10.1109/ACSSC.2009.5470146.
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  - Yu, J., and J. Krolik. “Multiband chirp synthesis for frequency-hopped FMCW radar.” Conference Record Asilomar Conference on Signals, Systems and Computers, December 1, 2009, 1315–19. https://doi.org/10.1109/ACSSC.2009.5469920.
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  - Mecca, V. F., and J. L. Krolik. “MIMO enabled multipath clutter rank estimation.” Ieee National Radar Conference Proceedings, September 11, 2009. https://doi.org/10.1109/RADAR.2009.4977137.
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  - Ramakrishnan, D., and J. Krolik. “Adaptive radar detection in doubly nonstationary autoregressive doppler spread clutter.” Ieee Transactions on Aerospace and Electronic Systems 45, no. 2 (July 20, 2009): 484–501. https://doi.org/10.1109/TAES.2009.5089536.
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  - Hickman, G., and J. L. Krolik. “A graph-theoretic approach to constrained floor plan estimation from radar measurements.” Ieee Transactions on Signal Processing 57, no. 5 (May 25, 2009): 1877–88. https://doi.org/10.1109/TSP.2009.2014815.
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  - Michaels, J. E., J. S. Hall, G. Hickman, and J. Krolik. “Sparse array imaging of change-detected ultrasonic signals by minimum variance processing.” Aip Conference Proceedings 1096 (May 12, 2009): 642–49. https://doi.org/10.1063/1.3114316.
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  - Krolik, J., V. Mecca, O. Kazanci, and I. Bilik. “Multipath spread-Doppler clutter mitigation for over-the-horizon radar.” 2008 Ieee Radar Conference, Radar 2008, December 1, 2008. https://doi.org/10.1109/RADAR.2008.4720844.
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  - Mecca, V. F., and J. L. Krolik. “MIMO STAP clutter mitigation performance demonstration using acoustic arrays.” Conference Record Asilomar Conference on Signals, Systems and Computers, December 1, 2008, 634–38. https://doi.org/10.1109/ACSSC.2008.5074483.
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  - Rogers, J. S., and J. L. Krolik. “Passive broadband source localization in shallow-water multipath acoustic channels.” Oceans 2008, December 1, 2008. https://doi.org/10.1109/OCEANS.2008.5152051.
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  - Tao, H., G. Hickman, and J. Krolik. “Field directionality synthesis from multiple array orientations: A least squares approach.” Oceans 2008, December 1, 2008. https://doi.org/10.1109/OCEANS.2008.5151984.
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  - Goldhahn, Ryan, Granger Hickman, and Jeffrey Krolik. “Waveguide invariant broadband target detection and reverberation estimation..” The Journal of the Acoustical Society of America 124, no. 5 (November 2008): 2841–51. https://doi.org/10.1121/1.2980519.
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  - Bilik, I., O. Kazanci, and J. Krolik. “Radar clutter mitigation via space-time wavefront adaptive sensing.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, September 16, 2008, 2589–92. https://doi.org/10.1109/ICASSP.2008.4518178.
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  - Mecca, V. F., J. L. Krolik, and F. C. Robey. “Beamspace slow-time MIMO radar for multipath clutter mitigation.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, September 16, 2008, 2313–16. https://doi.org/10.1109/ICASSP.2008.4518109.
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  - Mecca, V. F., J. L. Krolik, F. C. Robey, and D. Ramakrishnan. “Slow-Time MIMO SpaceTime Adaptive Processing,” March 11, 2008, 283–318. https://doi.org/10.1002/9780470391488.ch7.
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  - Tao, Hailiang, and Jeffrey L. Krolik. “Waveguide invariant focusing for broadband beamforming in an oceanic waveguide..” The Journal of the Acoustical Society of America 123, no. 3 (March 2008): 1338–46. https://doi.org/10.1121/1.2832335.
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  - Bilik, I., O. Kazanci, and J. Krolik. “Wavefront adaptive sensing for radar spread clutter mitigation.” 2007 2nd Ieee International Workshop on Computational Advances in Multi Sensor Adaptive Processing, Campsap, December 1, 2007, 185–88. https://doi.org/10.1109/CAMSAP.2007.4497996.
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  - Kazanci, O., I. Bilik, and J. Krolik. “Wavefront adaptive raymode processing for over-the-horizon HF radar clutter mitigation.” Conference Record Asilomar Conference on Signals, Systems and Computers, December 1, 2007, 2191–94. https://doi.org/10.1109/ACSSC.2007.4487629.
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  - Krolik, J. L., and G. Hickman. “A graph-theoretic approach for constraining floor plan estimation from radar measurements.” Conference Record Asilomar Conference on Signals, Systems and Computers, December 1, 2007, 2228–34. https://doi.org/10.1109/ACSSC.2007.4487637.
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  - Mecca, V. F., and J. L. Krolik. “Slow-time MIMO STAP with improved power efficiency.” Conference Record Asilomar Conference on Signals, Systems and Computers, December 1, 2007, 202–6. https://doi.org/10.1109/ACSSC.2007.4487195.
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  - Smith, S. M., J. Krolik, and I. Bilik. “Theoretical passive sonar performance of a cluster of UUV towed line arrays employing orientation diversity.” Oceans Conference Record (Ieee), December 1, 2007. https://doi.org/10.1109/OCEANS.2007.4449190.
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  - Bilik, I., and J. Krolik. “Comparative theoretical performance of maneuverable unmanned vehicles versus conventional towed-arrays for passive sonar.” Oceans 2007 Europe, November 28, 2007.
  - Rogers, J. S., and J. L. Krolik. “A study of active sonar reverberation using ultrasonic experiments in a shallow-water tank.” Oceans 2007 Europe, November 28, 2007.
  - Tao, H., G. Hickman, J. L. Krolik, and M. Kemp. “Single hydrophone passive localization of transiting acoustic sources.” Oceans 2007 Europe, November 28, 2007.
  - Goldhahn, R., G. Hickman, and J. L. Krolik. “Waveguide invariant reverberation mitigation for active sonar.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 2 (August 6, 2007). https://doi.org/10.1109/ICASSP.2007.366392.
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  - Tao, H., and J. L. Krolik. “Waveguide invariant focusing for broadband adaptive beamforming in a shallow water channel.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 2 (August 6, 2007). https://doi.org/10.1109/ICASSP.2007.366402.
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  - Liu, D., J. Krolik, and L. Carin. “Electromagnetic Target Detection in Uncertain Media: Time-Reversal and Minimum-Variance Algorithms.” Ieee Transactions on Geoscience and Remote Sensing 45, no. 4 (April 7, 2007): 934–44. https://doi.org/10.1109/TGRS.2006.890411.
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  - Liu, D., S. Vasudevan, J. Krolik, G. Bal, and L. Carin. “Electromagnetic time-reversal source localization in changing media: Experiment and analysis.” Ieee Transactions on Antennas and Propagation 55, no. 2 (February 1, 2007): 344–54. https://doi.org/10.1109/TAP.2006.889807.
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  - Hickman, G., and J. Krolik. “Adaptive collaborative array trajectories for optimum passive detection.” Oceans 2006, December 1, 2006. https://doi.org/10.1109/OCEANS.2006.306888.
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  - Kazanci, O. R., and J. L. Krolik. “Single-snapshot beamformer performance using large arrays with faulty sensors.” 2006 Ieee Sensor Array and Multichannel Signal Processing Workshop Proceedings, Sam 2006, December 1, 2006, 6–10. https://doi.org/10.1109/SAM.2006.1677146.
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  - Krolik, J. L., J. Farrell, and A. Steinhardt. “Exploiting multipath propagation for GMTI in urban environments.” Ieee National Radar Conference Proceedings, December 1, 2006, 65–68. https://doi.org/10.1109/RADAR.2006.1631777.
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  - Mecca, V. F., D. Ramakrishnan, and J. L. Krolik. “MIMO radar space-time adaptive processing for multipath clutter mitigation.” 2006 Ieee Sensor Array and Multichannel Signal Processing Workshop Proceedings, Sam 2006, December 1, 2006, 249–53. https://doi.org/10.1109/SAM.2006.1677197.
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  - Ramakrishnan, D., and J. Krolik. “Target detection in abruptly non-stationary Doppler-spread clutter.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 3 (December 1, 2006).
  - Smith, S. M., and J. Krolik. “Orientation diversity for an autonomous underwater vehicle cluster.” Oceans 2006, December 1, 2006. https://doi.org/10.1109/OCEANS.2006.306974.
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  - Krolik, J. L., J. Farrell, and A. Steinhardt. “Exploiting multipath propagation for GMTI in urban environments.” Cie International Conference of Radar Proceedings 2006 (November 21, 2006): 65–68.
  - Liao, Rui, Martin J. McKeown, and Jeffrey L. Krolik. “Isolation and minimization of head motion-induced signal variations in fMRI data using independent component analysis..” Magnetic Resonance in Medicine 55, no. 6 (June 2006): 1396–1413. https://doi.org/10.1002/mrm.20893.
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  - Varadarajan, V., and J. L. Krolik. “Joint space-time interpolation for distorted linear and bistatic array geometries.” Ieee Transactions on Signal Processing 54, no. 3 (March 1, 2006): 848–60. https://doi.org/10.1109/TSP.2005.862941.
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  - Hickman, G., and J. Krolik. “Multipath delay estimation using the magnitude spectrum.” Ieee Workshop on Statistical Signal Processing Proceedings 2005 (December 1, 2005): 663–68.
  - Kazanci, O. R., and J. L. Krolik. “Beamspace adaptive channel compensation for sensor arrays with faulty elements.” Conference Record Asilomar Conference on Signals, Systems and Computers 2005 (December 1, 2005): 1316–19.
  - Liao, R., M. McKeown, and J. Krolik. “Improved motion correction of fMRI time-series corrupted with major head movement using extended motion-corrected independent component analysis.” Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 3765 LNCS (December 1, 2005): 346–55. https://doi.org/10.1007/11569541_35.
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  - Tao, H., and J. Krolik. “Robust range-rate estimation of passive narrowband sources in shallow water.” Conference Record Asilomar Conference on Signals, Systems and Computers 2005 (December 1, 2005): 1302–5.
  - Hickman, G., and J. Krolik. “Wide-band target depth estimation in a scattering ocean environment.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings IV (January 1, 2005). https://doi.org/10.1109/ICASSP.2005.1416199.
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  - Liao, Rui, Jeffrey L. Krolik, and Martin J. McKeown. “An information-theoretic criterion for intrasubject alignment of FMRI time series: motion corrected independent component analysis..” Ieee Transactions on Medical Imaging 24, no. 1 (January 2005): 29–44. https://doi.org/10.1109/tmi.2004.837791.
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  - Liu, D., G. Kang, L. Li, Y. Chen, S. Vasudevan, W. Joines, Q. H. Liu, J. Krolik, and L. Carin. “Electromagnetic time-reversal imaging of a target in a cluttered environment.” Ieee Transactions on Antennas and Propagation 53, no. 9 (2005): 3058–66. https://doi.org/10.1109/TAP.2005.854563.
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  - Varadarajan, V., and J. Krolik. “Target detection using dynamically reconfigurable sensor arrays.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings IV (January 1, 2005). https://doi.org/10.1109/ICASSP.2005.1416182.
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  - Krolik, J. L., P. Book, and S. Kraut. “Adaptive sonar detection performance when the signal wavefront and noise covariance are uncertain.” 2004 Sensor Array and Multichannel Signal Processing Workshop, December 1, 2004, 235–38.
  - Liao, R., M. J. McKeown, and J. L. Krolik. “Isolation and minimization of effects of motion on fMRI using multiple reference images.” 2004 2nd Ieee International Symposium on Biomedical Imaging: Macro to Nano 1 (December 1, 2004): 916–19.
  - Varadarajan, V., and J. Krolik. “Model-based space-time adaptive processing for active sonar.” Conference Record Asilomar Conference on Signals, Systems and Computers 2 (December 1, 2004): 1431–35.
  - Liao, R., M. J. McKeown, and J. L. Krolik. “Motion-corrected independent component analysis for robust functional magnetic resonance imaging.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 2 (October 7, 2004).
  - Varadarajan, V., and J. Krolik. “Array shape estimation and tracking using active sonar reverberation.” Ieee Transactions on Aerospace and Electronic Systems 40, no. 3 (July 1, 2004): 1073–86. https://doi.org/10.1109/TAES.2004.1337475.
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  - Hickman, Granger, and Jeffrey L. Krolik. “Matched-field depth estimation for active sonar..” The Journal of the Acoustical Society of America 115, no. 2 (February 2004): 620–29. https://doi.org/10.1121/1.1634277.
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  - Kraut, S., R. H. Anderson, and J. L. Krolik. “A Generalized Karhunen-Loeve Basis for Efficient Estimation of Tropospheric Refractivity Using Radar Clutter.” Ieee Transactions on Signal Processing 52, no. 1 (January 1, 2004): 48–60. https://doi.org/10.1109/TSP.2003.820297.
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  - Gadwal, V., and J. Krolik. “A performance evaluation of autoregressive clutter mitigation methods for over-the-horizon radar.” Conference Record of the Asilomar Conference on Signals, Systems and Computers 1 (December 1, 2003): 937–41.
  - Kraut, S., and J. Krolik. “Passive source localization in the presence of near-endfire interference.” Conference Record of the Asilomar Conference on Signals, Systems and Computers 1 (December 1, 2003): 760–64.
  - Varadarajan, V., and J. Krolik. “Joint space-time interpolation for bistatic STAP.” Conference Record of the Asilomar Conference on Signals, Systems and Computers 1 (December 1, 2003): 60–65.
  - Varadarajan, V., and J. L. Krolik. “Space-time interpolation for adaptive arrays with limited training data.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 5 (September 25, 2003): 353–56.
  - Gerstoft, P., L. T. Rogers, J. L. Krolik, and W. S. Hodgkiss. “Inversion for refractivity parameters from radar sea clutter.” Radio Science 38, no. 3 (May 1, 2003).
  - Anderson, R. H., S. Kraut, and J. L. Krolik. “Robust altitude estimation for over-the-horizon radar using a state-space multipath fading model.” Ieee Transactions on Aerospace and Electronic Systems 39, no. 1 (January 1, 2003): 192–201. https://doi.org/10.1109/TAES.2003.1188903.
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  - Anderson, R. H., and J. L. Krolik. “Track association for over-the-horizon radar with a statistical ionospheric model.” Ieee Transactions on Signal Processing 50, no. 11 (November 1, 2002): 2632–43. https://doi.org/10.1109/TSP.2002.804099.
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  - Kraut, S., and J. Krolik. “Passive localization in range-rate of shallow-water moving targets, by sequential importance sampling.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 3 (July 11, 2002).
  - Vasudevan, S., R. Anderson, and J. L. Krolik. “MAP sequence estimation of microwave refractivity from radar clutter via a particle filtering implementation of the viterbi algorithm.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 3 (July 11, 2002).
  - Tantum, Stacy L., Loren W. Nolte, Jeffrey L. Krolik, and Kerem Harmanci. “The performance of matched-field track-before-detect methods using shallow-water Pacific data..” The Journal of the Acoustical Society of America 112, no. 1 (July 2002): 119–27. https://doi.org/10.1121/1.1489435.
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  - Pentericci, Laura, Xiaohui Fan, Hans-Walter Rix, Michael A. Strauss, Vijay K. Narayanan, Gordon T. Richards, Donald P. Schneider, et al. “VLT Optical and Near-Infrared Observations of the [CLC][ITAL]z[/ITAL][/CLC] = 6.28 Quasar SDSS J1030+0524.” The Astronomical Journal 123, no. 5 (May 2002): 2151–58. https://doi.org/10.1086/340077.
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  - Stoughton, Chris, Robert H. Lupton, Mariangela Bernardi, Michael R. Blanton, Scott Burles, Francisco J. Castander, A. J. Connolly, et al. “Sloan Digital Sky Survey: Early Data Release.” The Astronomical Journal 123, no. 1 (January 2002): 485–548. https://doi.org/10.1086/324741.
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  - Anderson, R., S. Vasudevan, J. L. Krolik, and L. T. Rogers. “Maximum A posteriori refractivity estimation from radar clutter using a Markov model for microwave propagation.” International Geoscience and Remote Sensing Symposium (Igarss) 2 (December 1, 2001): 906–9.
  - Varadarajan, V., and J. L. Krolik. “Multichannel system identification methods for sensor array calibration in uncertain multipath environments.” Ieee Workshop on Statistical Signal Processing Proceedings, December 1, 2001, 297–300.
  - Menou, Kristen, Daniel E. Vanden Berk, Željko Ivezić, Rita S. J. Kim, Gillian R. Knapp, Gordon T. Richards, Iskra Strateva, et al. “Broad Absorption Line Quasars in the Sloan Digital Sky Survey with VLA FIRST Radio Detections.” The Astrophysical Journal 561, no. 2 (November 10, 2001): 645–52. https://doi.org/10.1086/323218.
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  - Anderson, R. H., S. Kraut, and J. L. Krolik. “Robust altitude estimation for over-the-horizon radar using a state-space model for multipath fading.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 5 (September 26, 2001): 2901–4.
  - Vasudevan, S., and J. L. Krolik. “Refractivity estimation from radar clutter by sequential importance sampling with a Markov model for microwave propagation.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 5 (September 26, 2001): 2905–8.
  - Agol, Eric, Julian Krolik, Neal J. Turner, and James M. Stone. “Two‐dimensional Hydrodynamic Simulations of Convection in Radiation‐dominated Accretion Disks.” The Astrophysical Journal 558, no. 2 (September 10, 2001): 543–52. https://doi.org/10.1086/322277.
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  - Kraut, S., and J. Krolik. “Application of maximal invariance to the ACE detection problem.” Conference Record of the Asilomar Conference on Signals, Systems and Computers 1 (December 1, 2000): 417–20.
  - Edelson, Rick, Anuradha Koratkar, Kirpal Nandra, Michael Goad, Bradley M. Peterson, Stefan Collier, Julian Krolik, et al. “IntensiveHST,RXTE, andASCAMonitoring of NGC 3516: Evidence against Thermal Reprocessing.” The Astrophysical Journal 534, no. 1 (May 2000): 180–88. https://doi.org/10.1086/308752.
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  - Harmanci, K., J. Tabrikian, and J. L. Krolik. “Relationships between adaptive minimum variance beamforming and optimal source localization.” Ieee Transactions on Signal Processing 48, no. 1 (January 1, 2000): 1–12. https://doi.org/10.1109/78.815474.
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  - Harmanci, K., and J. Krolik. “Adaptive temporal processing for equatorial spread Doppler clutter suppression.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 5 (January 1, 2000): 3041–44. https://doi.org/10.1109/ICASSP.2000.861176.
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  - Kraut, S., and J. Krolik. “Optimal subspace selection for non-linear parameter estimation applied to refractivity from clutter.” Ieee Signal Processing Workshop on Statistical Signal and Array Processing, Ssap, January 1, 2000, 113–17.
  - Krolik, J. L., J. Tabrikian, S. Vasudevan, and L. T. Rogers. “Using radar sea clutter to estimate refractivity profiles associated with the capping inversion of the marine atmospheric boundary layer.” International Geoscience and Remote Sensing Symposium (Igarss) 1 (December 1, 1999): 649–51.
  - Rogers, L. T., C. P. Hattan, and J. L. Krolik. “Using radar sea echo to estimate surface layer refractivity profiles.” International Geoscience and Remote Sensing Symposium (Igarss) 1 (December 1, 1999): 658–62.
  - Tabrikian, J., and J. L. Krolik. “Barankin bounds for source localization in an uncertain ocean environment.” Ieee Transactions on Signal Processing 47, no. 11 (December 1, 1999): 2917–27. https://doi.org/10.1109/78.796428.
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  - Tabrikian, J., and J. L. Krolik. “Theoretical performance limits on tropospheric refractivity estimation using point-to-point microwave measurements.” Ieee Transactions on Antennas and Propagation 47, no. 11 (November 1, 1999): 1727–34. https://doi.org/10.1109/8.814953.
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  - Agol, Eric, and Julian Krolik. “Imaging a Quasar Accretion Disk with Microlensing.” The Astrophysical Journal 524, no. 1 (October 10, 1999): 49–64. https://doi.org/10.1086/307800.
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  - Hurt, Todd, Robert Antonucci, Ross Cohen, Anne Kinney, and Julian Krolik. “Ultraviolet Imaging Polarimetry of Narrow‐Line Radio Galaxies.” The Astrophysical Journal 514, no. 2 (April 1999): 579–86. https://doi.org/10.1086/306959.
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  - Papazoglou, M., and J. L. Krolik. “Matched-field estimation of aircraft altitude from multiple over-the-horizon radar revisits.” Ieee Transactions on Signal Processing 47, no. 4 (April 1, 1999): 966–76. https://doi.org/10.1109/78.752595.
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  - Anderson, R., and J. Krolik. “Multipath track association for over-The-horizon radar using a bootstrapped statistical ionospheric model.” Conference Record of the 33rd Asilomar Conference on Signals, Systems, and Computers 1 (January 1, 1999): 8–14. https://doi.org/10.1109/ACSSC.1999.832287.
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  - Harmanci, K., and J. Krolik. “Matched window processing for mitigating over-the-horizon radar spread Doppler clutter.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 5 (January 1, 1999): 2789–92.
  - Tabrikian, J., and J. L. Krolik. “Efficient computation of the Bayesian Cramer-Rao bound on estimating parameters of Markov models.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 3 (January 1, 1999): 1761–64.
  - Agol, Eric, and Julian Krolik. “Photon Damping of Waves in Accretion Disks.” The Astrophysical Journal 507, no. 1 (November 1998): 304–15. https://doi.org/10.1086/306332.
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  - Gonzalez Delgado, Rosa M., Timothy Heckman, Claus Leitherer, Gerhardt Meurer, Julian Krolik, Andrew S. Wilson, Anne Kinney, and Anuradha Koratkar. “Ultraviolet‐Optical Observations of the Seyfert 2 Galaxies NGC 7130, NGC 5135, and IC 3639: Implications for the Starburst–Active Galactic Nucleus Connection.” The Astrophysical Journal 505, no. 1 (September 20, 1998): 174–98. https://doi.org/10.1086/306154.
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  - Gelenbe, E., K. Harmanci, and J. Krolik. “Learning neural networks for detection and classification of synchronous recurrent transient signals.” Signal Processing 64, no. 3 (February 26, 1998): 233–47. https://doi.org/10.1016/S0165-1684(97)00193-X.
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  - Anderson, R. H., and J. L. Krolik. “Over-the-horizon radar target localization using a hidden Markov model estimated from ionosonde data.” Radio Science 33, no. 4 (January 1, 1998): 1199–1213. https://doi.org/10.1029/98RS00476.
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  - Anderson, R. H., and J. L. Krolik. “The performance of maximum likelihood over-the-horizon radar coordinate registration.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 4 (January 1, 1998): 2481–84. https://doi.org/10.1109/ICASSP.1998.681654.
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  - Hero, A., H. Messer, J. Goldberg, D. J. Thomson, M. G. Amin, G. Giannakis, A. Swami, et al. “Highlights of statistical signal and array processing.” Ieee Signal Processing Magazine 15, no. 5 (1998): 21–64. https://doi.org/10.1109/79.708539.
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  - Papazoglou, M., and J. L. Krolik. “Multi-dwell matched-field altitude estimation for over-the-horizon radar.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 4 (January 1, 1998): 2533–36. https://doi.org/10.1109/ICASSP.1998.681667.
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  - Krolik, J. L. “Maximum likelihood coordinate registration for over-the-horizon radar.” Ieee Transactions on Signal Processing 45, no. 4 (December 1, 1997): 945–59. https://doi.org/10.1109/78.564183.
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  - Mahadevan, Rohan, Ramesh Narayan, and Julian Krolik. “Gamma‐Ray Emission from Advection‐dominated Accretion Flows around Black Holes: Application to the Galactic Center.” The Astrophysical Journal 486, no. 1 (September 1997): 268–75. https://doi.org/10.1086/304499.
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  - Heckman, T. M., R. Gonzalez‐Delgado, C. Leitherer, G. R. Meurer, J. Krolik, A. S. Wilson, A. Koratkar, and A. Kinney. “A Powerful Nuclear Starburst in the Seyfert Galaxy Markarian 477: Implications for the Starburst–Active Galactic Nucleus Connection.” The Astrophysical Journal 482, no. 1 (June 10, 1997): 114–32. https://doi.org/10.1086/304139.
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  - Czenszak, S. P., and J. L. Krolik. “Robust wideband matched-field processing with a short vertical array.” Journal of the Acoustical Society of America 101, no. 2 (February 1, 1997): 749–59. https://doi.org/10.1121/1.417958.
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  - Harmanci, K., and J. L. Krolik. “Robust beamformer weight design for broadband matched-field processing.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 1 (January 1, 1997): 471–74.
  - Papazoglou, M., and J. L. Krolik. “Electromagnetic matched-field processing for target height finding with over-the-horizon radar.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 1 (January 1, 1997): 559–62.
  - Tabrikian, J., J. L. Krolik, and H. Messer. “Robust maximum-likelihood source localization in an uncertain shallow- water waveguide.” Journal of the Acoustical Society of America 101, no. 1 (January 1, 1997): 241–49. https://doi.org/10.1121/1.417996.
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  - Tabrikian, J., and J. L. Krolik. “Barankin bound for source localization in shallow water.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 1 (January 1, 1997): 499–502.
  - Krolik, J. L. “The performance of matched-field beamformers with mediterranean vertical array data.” Ieee Transactions on Signal Processing 44, no. 10 (December 1, 1996): 2605–11. https://doi.org/10.1109/78.539043.
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  - Krolik, J. L. “The Performance of Matched-Field Beanformers with Mediterranean Vertical Array Data.” Ieee Transactions on Signal Processing 44, no. 5 (December 1, 1996).
  - Krolik, J. L. “Robust matched-field beamforming with benchmark shallow-water acoustic array data.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 2 (January 1, 1996): 1185–88.
  - Krolik, J. L., and S. Narasimhan. “Performance bounds on acoustic thermometry of ocean climate in the presence of mesoscale sound-speed variability.” Journal of the Acoustical Society of America 99, no. 1 (January 1, 1996): 254–65. https://doi.org/10.1121/1.414536.
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  - Lasota, J. P., M. A. Abramowicz, X. Chen, and J. Krolik. “Is the Accretion Flow in NGC 4258 Advection Dominated?.” Astrophysical Journal 462, no. 1 (1996).
  - Papazoglou, M., and J. L. Krolik. “High resolution adaptive beamforming for three-dimensional acoustic imaging of zooplankton.” Journal of the Acoustical Society of America 100, no. 6 (January 1, 1996): 3621–30. https://doi.org/10.1121/1.417225.
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  - Tabrikian, J., J. L. Krolik, and H. Messer. “Robust maximum likelihood source localization by exploiting predictable acoustic modes.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 6 (January 1, 1996): 3089–91.
  - LIU, J. Y., and J. L. KROLIK. “THE SPATIAL CORRELATION OF ROUGH SEABED SCATTERING OF SURFACE-GENERATED AMBIENT NOISE (VOL 96, PG 2876, 1994).” Journal of the Acoustical Society of America 97, no. 5 (May 1995): 3198–3198. https://doi.org/10.1121/1.413088.
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  - Edelson, R., J. Krolik, G. Madejski, L. Maraschi, G. Pike, C. M. Urry, W. Brinkmann, et al. “Multiwavelength monitoring of the BL Lacertae object PKS 2155-304. 4: Multiwavelength analysis.” The Astrophysical Journal 438 (January 1995): 120–120. https://doi.org/10.1086/175059.
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  - Heckman, T., J. Krolik, G. Meurer, D. Calzetti, A. Kinney, A. Koratkar, C. Leitherer, C. Robert, and A. Wilson. “The nature of the ultraviolet continuum in type 2 Seyfert galaxies.” Astrophys. J. (Usa) 452, no. 2 (1995): 549–64.
  - Krolik, J. L., and S. Narasimhan. “Cramer-rao bound on acoustic measurement of ocean climate change in the presence of mesoscale sound-speed variability.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 5 (January 1, 1995): 2771–74.
  - Narasimhan, S., and J. L. Krolik. “Fundamental limits on acoustic source range estimation performance in uncertain ocean channels.” Journal of the Acoustical Society of America 97, no. 1 (January 1, 1995): 215–26. https://doi.org/10.1121/1.412306.
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  - Pier, Edward A., Robert Antonucci, Todd Hurt, Gerard Kriss, and Julian Krolik. “The intrinsic nuclear spectrum of NGC 1068.” The Astrophysical Journal 428 (June 1994): 124–124. https://doi.org/10.1086/174225.
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  - Jin-Yuan, L., and J. L. Krolik. “The Spatial Correlation Of Rough Seabed Scattering Of Surface-Generated Ambient Noise.” Journal of the Acoustical Society of America 96, no. 5 (January 1, 1994): 2876–86. https://doi.org/10.1121/1.411297.
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  - Krolik, J. L. “Sensor array processing performance evaluation via bootstrap resampling.” Journal of the Acoustical Society of America 95, no. 2 (January 1, 1994): 798–804. https://doi.org/10.1121/1.408390.
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  - Krolik, J. L., and D. N. Swingler. “On the Mean-Square Error Performance of Adaptive Minimum Variance Beamformers Based on the Sample Covariance Matrix.” Ieee Transactions on Signal Processing 42, no. 2 (January 1, 1994): 445–48. https://doi.org/10.1109/78.275625.
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  - Liu, J. Y., and J. L. Krolik. “Spatial correlation of rough seabed scattering of surface-generated ambient noise.” Journal of the Acoustical Society of America 96, no. 5 pt 1 (1994).
  - Niezgoda, G. H., and J. L. Krolik. “A Multiple Time Scale Modularized Adaptive Beamformer.” Ieee Transactions on Signal Processing 42, no. 5 (January 1, 1994): 1251–56. https://doi.org/10.1109/78.295189.
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  - Urry, C. M., L. Maraschi, R. Edelson, A. Koratkar, J. Krolik, G. Madejski, E. Pian, et al. “Multiwavelength monitoring of the BL Lacertae object PKS 2155-304. I - The IUE campaign.” The Astrophysical Journal 411 (July 1993): 614–614. https://doi.org/10.1086/172864.
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  - Krolik, Julian, Chris Done, and Grzegorz Madejski. “X-ray light curves of active galactic nuclei are phase incoherent.” The Astrophysical Journal 402 (January 1993): 432–432. https://doi.org/10.1086/172148.
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  - Krolik, J. L. “Matched-field minimum variance beamforming in a random ocean channel.” Journal of the Acoustical Society of America 92, no. 3 (October 14, 1992): 1408–19. https://doi.org/10.1121/1.403935.
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  - Krolik, J., and D. Swingler. “Cross-talk artifacts in spatial spectrum estimation with a sensor array.” Journal of the Acoustical Society of America 92, no. 1 (January 1, 1992): 238–43. https://doi.org/10.1121/1.404287.
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  - Krolik, J. L., and W. S. Hodgkiss. “Matched field source localization in an uncertain environment using constraints based on sound-speed perturbations.” Oceans Conference Record (Ieee) 2 (December 1, 1991): 771–78.
  - Krolik, J., G. Niezgoda, and D. Swingler. “A bootstrap approach for evaluating source localization performance on real sensor array data.” Proceedings Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing 2 (December 1, 1991): 1281–84.
  - Niezgoda, G. H., J. Krolik, and E. Plotkin. “Broadband source localization in a slowly time-varying environment by multichannel Kalman filtering.” Ieee Pacific Rim Conference on Communications, Computers and Signal Processing. Conference Proceedings, December 1, 1991, 787–90.
  - Niezgoda, G. H., and J. Krolik. “The application of adaptive multichannel spectral estimation for broadband array processing.” Proceedings Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing 2 (December 1, 1991): 1397–1400.
  - Krolik, J., and D. Swingler. “The Performance of Minimax Spatial Resampling Filters for Focusing Wide-Band Arrays.” Ieee Transactions on Signal Processing 39, no. 8 (January 1, 1991): 1899–1903. https://doi.org/10.1109/78.91162.
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  - Krolik, J., and D. Swingler. “The detection performance of coherent wideband focusing for a spatially resampled array.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 5 (December 1, 1990): 2827–30.
  - Krolik, J., and D. Swingler. “Focused Wide-Band Array Processing by Spatial Resampling.” Ieee Transactions on Acoustics, Speech, and Signal Processing 38, no. 2 (January 1, 1990): 356–60. https://doi.org/10.1109/29.103073.
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  - Krolik, J., J. Lynch, and D. Swingler. “Robust incoherent matched field processor for source localization in uncertain multipath fields.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 4 (December 1, 1989): 2637–40.
  - Krolik, J., and D. Swingler. “Focussed partially adaptive broadband beamforming via spatial resampling,” December 1, 1989, 117–18.
  - Swingler, D. N., R. S. Walker, and J. Krolik. “Implementation considerations for a doubly-steered, coherently-focussed high-resolution broadband beamformer for source location estimation.” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 4 (December 1, 1989): 2589–92.
  - Krolik, J., and D. Swingler. “Multiple Broad-Band Source Location Using Steered Covariance Matrices.” Ieee Transactions on Acoustics, Speech, and Signal Processing 37, no. 10 (January 1, 1989): 1481–94. https://doi.org/10.1109/29.35386.
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  - Swingler, D. N., and J. Krolik. “Source Location Bias In The Coherently Focused High-Resolution Broadband Beamformer.” Ieee Transactions on Acoustics, Speech, and Signal Processing 37, no. 1 (January 1, 1989): 143–45. https://doi.org/10.1109/29.17516.
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  - Krolik, J., D. N. Swingler, and R. S. Walker. “Dominant-mode steered linear prediction for high resolution broadband source location,” December 1, 1988, 28–32.
  - Krolik, J., M. Eizenman, and S. Pasupathy. “Time Delay Estimation of Signals with Uncertain Spectra.” Ieee Transactions on Acoustics, Speech, and Signal Processing 36, no. 12 (January 1, 1988): 1801–11. https://doi.org/10.1109/29.9025.
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  - Krolik, J., and M. Eizenman. “MINIMUM VARIANCE SPECTRAL ESTIMATION FOR BROADBAND SOURCE LOCATION USING STEERED COVARIANCE MATRICES..” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, January 1, 1988, 2841–44.
  - Swingler, D. N., R. S. Walker, and J. Krolik. “HIGH-RESOLUTION BROADBAND BEAMFORMING USING A DOUBLY-STEERED COHERENT SIGNAL-SUBSPACE APPROACH..” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, January 1, 1988, 2658–61.
  - Leib, H., M. Eizenman, S. Pasupathy, and J. Krolik. “Adaptive Lattice Filter for Multiple Sinusoids in White Noise.” Ieee Transactions on Acoustics, Speech, and Signal Processing 35, no. 7 (January 1, 1987): 1015–23. https://doi.org/10.1109/TASSP.1987.1165227.
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  - Krolik, J., M. Eizenman, and S. Pasupathy. “TIME DELAY ESTIMATION VIA GENERALIZED CORRELATION WITH ADAPTIVE SPATIAL PREFILTERING..” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, December 1, 1986, 1893–96.
  - Krolik, J., M. Eizenman, and S. Pasupathy. “APPLICATION OF THE LMS ADAPTIVE LINE ENHANCER IN TIME DELAY ESTIMATION..” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, December 1, 1985, 1766–69.
  - Krolik, J., M. Eizenman, and S. Pasupathy. “Constrained time delay estimation via zero-crossing methods.” Adaptive Methods in Underwater Acoustics. Proceedings of the Nato Advanced Study Institute, 1985, 207–16.
  - Krolik, J., M. Joy, S. Pasupathy, and M. Eizenman. “COMPARATIVE STUDY OF THE LMS ADAPTIVE FILTER VERSUS GENERALIZED CORRELATION METHODS FOR TIME DELAY ESTIMATION..” Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings 1 (January 1, 1984).
  - Shorey, J. A., L. W. Nolte, and J. L. Krolik. “Computationally efficient Monte Carlo estimation algorithms for matched field processing in uncertain ocean environments.” J. Comput. Acoust. (Singapore) 2, no. 3 (n.d.): 285–314.
- Book Sections
  - Xu, C., and J. Krolik. “Multiple-input multiple-output radar for monitoring of bed-ridden patients.” In Radar for Indoor Monitoring: Detection, Classification, and Assessment, 227–60, 2017. https://doi.org/10.1201/9781315155340.
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  - Tabrikian, J., and J. L. Krolik. “Barankin bounds for source localization in an uncertain ocean environment.” In Bayesian Bounds for Parameter Estimation and Nonlinear Filtering/Tracking, 529–39, 2007. https://doi.org/10.1109/9780470544198.ch47.
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  - Tabrikian, J., and J. L. Krolik. “Efficient computation of the bayesian cramerrao bound on estimating parameters of markov models.” In Bayesian Bounds for Parameter Estimation and Nonlinear Filtering/Tracking, 371–74, 2007. https://doi.org/10.1109/9780470544198.ch32.
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- Conference Papers
  - Cnaan-On, I., A. Harms, J. L. Krolik, and A. R. Calderbank. “Run-length limited codes for backscatter communication.” In Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, 6110–14, 2017. https://doi.org/10.1109/ICASSP.2017.7953330.
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  - Ramirez, J., N. Bottenus, G. Trahey, and J. L. Krolik. “Synthetic aperture imaging with thinned linear sensor arrays for medical ultrasound.” In Proceedings of the Ieee Sensor Array and Multichannel Signal Processing Workshop, Vol. 2016-September, 2016. https://doi.org/10.1109/SAM.2016.7569640.
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  - Harms, A., J. L. Odom, and J. L. Krolik. “Ocean acoustic waveguide invariant parameter estimation using tonal noise sources.” In Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, 2015-August:4001–4, 2015. https://doi.org/10.1109/ICASSP.2015.7178722.
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  - Li, L., and J. L. Krolik. “Target tracking in uncertain Multipath Environment using distributed Angle-of-Arrival observation.” In Ieee National Radar Conference Proceedings, 2015-June:1473–78, 2015. https://doi.org/10.1109/RADAR.2015.7131228.
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  - Li, L., and J. L. Krolik. “CRLB performance for bistatic MIMO radar.” In Ieee National Radar Conference Proceedings, 2015-June:1468–72, 2015. https://doi.org/10.1109/RADAR.2015.7131227.
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  - Ramirez, J., and J. Krolik. “Multiple source localization with moving co-prime arrays.” In Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, 2015-August:2374–78, 2015. https://doi.org/10.1109/ICASSP.2015.7178396.
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  - Xu, C., and J. Krolik. “Space-delay adaptive processing for MIMO RF indoor motion mapping.” In Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, 2015-August:2349–53, 2015. https://doi.org/10.1109/ICASSP.2015.7178391.
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  - Hickman, G., and J. L. Krolik. “Non-recurrent wideband continuous active sonar.” In Oceans 2012 Mts/Ieee: Harnessing the Power of the Ocean, 2012. https://doi.org/10.1109/OCEANS.2012.6405101.
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  - Odom, J. L., and J. L. Krolik. “Time-varying array shape estimation by mapping acoustic field directionality.” In Oceans 2012 Mts/Ieee: Harnessing the Power of the Ocean, 2012. https://doi.org/10.1109/OCEANS.2012.6404977.
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  - Tabrikian, J., J. L. Krolik, and S. Vasudevan. “Estimating tropospheric refractivity parameters from radar sea clutter.” In Proceedings of the Ieee Signal Processing Workshop on Higher Order Statistics, Spw Hos 1999, 345–48, 1999. https://doi.org/10.1109/HOST.1999.778755.
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  - Narasimhan, S., and J. L. Krolik. “A Cramer-Rao bound for source range estimation in a random ocean waveguide.” In Ieee 7th Sp Workshop on Statistical Signal and Array Processing, Ssap 1994 Proceedings, 309–12, 1994. https://doi.org/10.1109/SSAP.1994.572505.
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  - Niezgoda, G. H., and J. Krolik. “The application of Laguerre partial series expansions for broadband array processing.” In Icassp, Ieee International Conference on Acoustics, Speech and Signal Processing Proceedings, 2:501–4, 1992. https://doi.org/10.1109/ICASSP.1992.226010.
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Teaching & Mentoring
Recent Courses
- ECE 686: Adaptive Filters 2019
- ECE 688: Sensor Array Signal Processing 2018

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