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Simultaneous target and multipath positioning

Publication ,  Journal Article
Li, L; Krolik, JL
Published in: IEEE Journal on Selected Topics in Signal Processing
February 1, 2014

This paper addresses the problem of target geo-localization in complex multipath environments such as indoor and urban settings. In both radar applications (where targets are non-cooperative) and navigation in GPS-denied areas using RF signals (where the subject is cooperative), multipath propagation is a well-known cause of large geo-location errors except in rare cases when a very accurate channel model is available. This work addresses more typical situations of uncertain channel properties by jointly estimating target position and multipath parameters. The proposed Simultaneous Target and Multipath Positioning (STAMP) approach involves an application of multi-scan multi-hypothesis data association to approximate recursive Bayesian estimates of both moving target location as well as specular reflector and point scatterer locations. STAMP achieves joint estimation by exploiting the different dynamics of targets (e.g., people moving) versus channel parameters (e.g., fixed wall locations). Algorithm performance is evaluated in simulation for radar localization of a non-cooperative target in an uncertain urban multipath environment. In addition, the successful demonstration of STAMP geolocation using real wideband microwave data collected in an actual building foyer with unknown floor plan is discussed. Finally, the issue of identifiability of both target and multipath parameters is explored via analysis of the Cramer-Rao Lower Bound (CRLB) on joint estimation of target and multipath parameters in both line-of-sight and non-line-of-sight scenarios. © 2013 IEEE.

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Published In

IEEE Journal on Selected Topics in Signal Processing

DOI

ISSN

1932-4553

Publication Date

February 1, 2014

Volume

8

Issue

1

Start / End Page

153 / 165

Related Subject Headings

  • Networking & Telecommunications
  • 4603 Computer vision and multimedia computation
  • 4006 Communications engineering
  • 1005 Communications Technologies
  • 0906 Electrical and Electronic Engineering
  • 0801 Artificial Intelligence and Image Processing
 

Citation

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Li, L., & Krolik, J. L. (2014). Simultaneous target and multipath positioning. IEEE Journal on Selected Topics in Signal Processing, 8(1), 153–165. https://doi.org/10.1109/JSTSP.2013.2289949
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.
Li L, Krolik JL. Simultaneous target and multipath positioning. IEEE Journal on Selected Topics in Signal Processing. 2014 Feb 1;8(1):153–65.
Li, L., and J. L. Krolik. “Simultaneous target and multipath positioning.” IEEE Journal on Selected Topics in Signal Processing, vol. 8, no. 1, Feb. 2014, pp. 153–65. Scopus, doi:10.1109/JSTSP.2013.2289949.
Li L, Krolik JL. Simultaneous target and multipath positioning. IEEE Journal on Selected Topics in Signal Processing. 2014 Feb 1;8(1):153–165.

Published In

IEEE Journal on Selected Topics in Signal Processing

DOI

ISSN

1932-4553

Publication Date

February 1, 2014

Volume

8

Issue

1

Start / End Page

153 / 165

Related Subject Headings

  • Networking & Telecommunications
  • 4603 Computer vision and multimedia computation
  • 4006 Communications engineering
  • 1005 Communications Technologies
  • 0906 Electrical and Electronic Engineering
  • 0801 Artificial Intelligence and Image Processing