A physics-based UWB FOPEN SAR man-made target detector

Foliage penetrating (FOPEN) VHF/UHF synthetic aperture radar (SAR) can image hidden man-made targets in the ultra-wideband (UWB) and at wide angles to achieve both range and cross-range high resolutions. The man-made target can be modeled by a dihedral formed between its side and the ground because of the long wavelength of VHF/UHF. The target-side dihedral model is used to form the signature library. A kind of FOPEN-SAR detection based on physics is studied, which carries out the matched filter image formation (MFIF) and the complex spatial matched filtering (CSMF) in two subsequent steps. Our simulation results have shown that the physics-based detector is efficient with greatly improved detection performance