Abstract
The frequency-domain field scattered from a perfect electrically conducting (PEC) 90/spl deg/ dihedral corner reflector is summarized. The inverse Fourier transform is used in conjunction with the frequency-domain description to obtain a high-frequency analytical approximation to the impulse response of the dihedral reflector. An amplitude modulated (AM) pulse is convolved with the impulse response of the target to yield the range profile signature. The range profile provides a one-dimensional image of the scatterer. This geometry was chosen because it is the most basic canonical shape that manifests the double-bounce mechanism. Numerical results presented show the relative importance of the single-bounce and double-bounce scattering mechanisms in the time-domain. Comparisons are made with range profiles computed using spectral windows. >
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