论文部分内容阅读
穿透叶簇的VHF/UHF超宽带(UWB)SAR可用于探则地面隐蔽人造目标.它具有相对带宽很宽,积累角大的特点,能同时获得距离、方位两个方向的高分辨能力,在VHF/UHF低频段,一般的人造目标可简单模化为目标侧面与地面之间形成的一个长二面角.该文用二面角目标模型建立了特征信号库,在此基础上研究并仿真了一种基于简单散射物理的叶簇穿透SAR目标检测方案.结果表明,这种基于物理的检测方案是有效且可靠的.“,”Foliage penetrating (FOPEN) VHF/UHF SAR can imagee hidden man-made targets with wideangle and ultra-wideband to achieve both range and cross-range high resolution. The target can be modeled by dihedral formed between its side and the pound because of the long wave length of VHF/UHF. The target-side dihedral model is used to form the signature library. A FOPEN--SAR detection based on physics is studied, which carry on the Matched Filter Image Formation (MFIF) and the Complex Spatial Matched Filters (CSMF) in two subsequent steps. Our simulation results have shown that the physics-based detector is efficient with greatly improved detection performance.