Time-domain sensing of targets buried under a rough air-ground interface

Traian Dogaru, Leslie M. Collins, Lawrence Carin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper we model time-domain plane-wave scattering from targets buried under a rough (random) air-ground interface. The properties of the interface are parametrized as a random process with known statistics. Since the fields incident upon a buried target first penetrate the rough interface, they are random processes as well, and so are the scattered fields. An optimal detector is built based on this model, which takes into account both the clutter and target-signature statistics (the former due to scattering at the rough surface, and the latter due to transmission); the statistics of these two processes are in general different. Detector performance is compared to that of a matched filter, which assumes the target signature is known exactly (i.e., is non-random). The results presented here, as a function of angle and polarization, show that, when the target signature is properly treated as a random process, a gain in detector performance can be obtained. Also, we explain under which conditions this improvement is expected to be significant. ©2003 Copyright SPIE - The International Society for Optical Engineering.
Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Pages976-986
Number of pages11
DOIs
StatePublished - Dec 1 1998
Externally publishedYes

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