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Multi-aspect target detection in SAR imagery using hidden Markov models

Publication ,  Journal Article
Runkle, P; Nguyen, L; Ybarra, G; Carin, L
Published in: Proceedings of SPIE - The International Society for Optical Engineering
January 1, 1999

It is well known that radar scattering from an illuminated object is often dependent on target-sensor orientation. In typical synthetic aperture radar (SAR) imagery, such aspect dependence is lost during image formation. We apply a sequence of directional filters to the SAR imagery to generate a sequence of images which recover the directional dependence over a corresponding sequence of subapertures. The scattering statistics associated with geometrically distinct target-sensor orientations are then used to design a hidden Markov model (HMM) for the target class. This approach explicitly incorporates the sensor motion into the model and accounts for the fact that the orientation of the target is assumed to be unknown. Performance is quantified by considering the detection of tactical targets concealed in foliage.

Duke Scholars

Published In

Proceedings of SPIE - The International Society for Optical Engineering

ISSN

0277-786X

Publication Date

January 1, 1999

Volume

3721

Start / End Page

214 / 223

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
 

Citation

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ICMJE
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Runkle, P., Nguyen, L., Ybarra, G., & Carin, L. (1999). Multi-aspect target detection in SAR imagery using hidden Markov models. Proceedings of SPIE - The International Society for Optical Engineering, 3721, 214–223.
Runkle, P., L. Nguyen, G. Ybarra, and L. Carin. “Multi-aspect target detection in SAR imagery using hidden Markov models.” Proceedings of SPIE - The International Society for Optical Engineering 3721 (January 1, 1999): 214–23.
Runkle P, Nguyen L, Ybarra G, Carin L. Multi-aspect target detection in SAR imagery using hidden Markov models. Proceedings of SPIE - The International Society for Optical Engineering. 1999 Jan 1;3721:214–23.
Runkle, P., et al. “Multi-aspect target detection in SAR imagery using hidden Markov models.” Proceedings of SPIE - The International Society for Optical Engineering, vol. 3721, Jan. 1999, pp. 214–23.
Runkle P, Nguyen L, Ybarra G, Carin L. Multi-aspect target detection in SAR imagery using hidden Markov models. Proceedings of SPIE - The International Society for Optical Engineering. 1999 Jan 1;3721:214–223.

Published In

Proceedings of SPIE - The International Society for Optical Engineering

ISSN

0277-786X

Publication Date

January 1, 1999

Volume

3721

Start / End Page

214 / 223

Related Subject Headings

  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering