Indication of slowly moving targets via change detection

Kenneth Ranney; Anthony Martone; Mehrdad Soumekh

doi:10.1117/12.720743

3 May 2007 Indication of slowly moving targets via change detection

Kenneth Ranney, Anthony Martone, Mehrdad Soumekh

Proceedings Volume 6547, Radar Sensor Technology XI; 65470L (2007) https://doi.org/10.1117/12.720743
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

Radar systems have long been recognized as an effective tool for detecting moving targets--a problem commonly referred to as moving target indication (MTI). Recent advances, including Space Time Adaptive Processing (STAP), allow for even more precise determination of a target's location relative to the radar. Still, most of these methods approach MTI from the point of view of parameter estimation, and this sort of an approach can become problematic when the target speed is low and its associated Doppler frequency is near zero. In such cases the target signature is masked by the stationary, background clutter. Another potential drawback to STAP techniques arises from the fact that they require a relatively large number of receive channels, adding additional complexity to the radar system hardware. In this paper we present a moving-target-indication (MTI) technique that is based on a change detection paradigm. That is, rather than estimating the Doppler frequency associated with a target's motion, we propose to detect subtle differences between simultaneously collected, complex SAR images. We use simulated data to illustrate the feasibility of the approach under several different operating scenarios.

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Kenneth Ranney, Anthony Martone, and Mehrdad Soumekh "Indication of slowly moving targets via change detection", Proc. SPIE 6547, Radar Sensor Technology XI, 65470L (3 May 2007); https://doi.org/10.1117/12.720743

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KEYWORDS

Target detection

Synthetic aperture radar

Radar

Antennas

Signal to noise ratio

Doppler effect

Optical spheres

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