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Based on analysis of a point target imaged by different synthetic aperture radar (SAR) systems, the commonly used impulse response function in SAR Imaging (IRF-SAR)-a two-dimensional (2-D) <i>sinc</i> function-is shown to be inappropriate for ultrawideband-ultrawidebeam (UWB) SAR systems utilizing a large fractional signal bandwidth and a wide antenna(More)
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1. ABSTRACT Low frequency SAR systems have shown its capability to detect stationary targets in dense forested areas or under camouflage [1]. These capabilities are associated with the low attenuation at these frequencies. Therefore there have been low frequency experimental systems developed to detect moving targets [2][3]. Detection at low frequency is(More)