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31 May 2013Buried target radar imaging with an ultra-wideband, vehicle-mounted antenna array
The problem of detecting buried objects has engaged radar system developers for quite some time. Many
systems—both experimental and commercial—have been developed, including vehicle-mounted systems
that look beneath road surfaces. Most of these downward-looking systems exploit multiple transmit and
receive channels to enhance resolution in the final radar imagery used for target detection. In such a
system, the configuration and operation of the various transmit and receive elements play a critical role in
the quality of the output imagery. In what follows, we leverage high-fidelity electromagnetic model data
to examine a multistatic downward-looking radar system. We evaluate the signatures produced by various
targets of interest and describe, both qualitatively and quantitatively, the variations in target signatures
produced by different system configurations. Finally, we analyze the underlying physics of the problem to
explain certain characteristics in the observed target signatures.