Direct Position Determination Sensitivity to NLOS Propagation Effects on Doppler-Shift

In this paper, we consider the Direct Position Determination (DPD) algorithm for Doppler-shift based localization of radio-emitters. The DPD emitter location estimate is the location candidate that maximizes the largest eigenvalue of a location-dependent matrix. The sensitivity to multipath is analy...

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Bibliographic Details
Published in:IEEE transactions on signal processing 2019-07, Vol.67 (14), p.3870-3881
Main Authors: Picard, Joseph S., Weiss, Anthony J.
Format: Article
Language:English
Subjects:
Algorithms
Derivatives
Doppler
Doppler effect
Eigenvalues
Eigenvalues and eigenfunctions
Emitters
Error analysis
Error detection
Line of sight
Localization
multipath
non-line-of-sight propagation
Receivers
Sea measurements
Sensitivity
Sensitivity analysis
Signal processing algorithms
Time-frequency analysis
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Summary:In this paper, we consider the Direct Position Determination (DPD) algorithm for Doppler-shift based localization of radio-emitters. The DPD emitter location estimate is the location candidate that maximizes the largest eigenvalue of a location-dependent matrix. The sensitivity to multipath is analyzed by Small Error Analysis, which requires expressions for the derivatives of the largest eigenvalue with respect to the multipath parameters. We consider multipath conditions in which the line-of-sight path is obstructed and the receivers intercept a non-line-of-sight (NLOS) component. We provide compact closed-form expressions for these derivatives. Our theoretical results are corroborated by numerical experiments.
ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2019.2923152