微粗糙面下埋地地雷目标的极化滤波增强

Polarization Filtering Enhancement of Buried Landmine Under Slightly Rough Surface

首先采用了二维分数布朗运动来模拟实际地面,利用微扰法给出了微粗糙表面的散射矩阵;其次计算了微粗糙面下某型号地雷目标的极化散射特性,并与平坦地表下的极化特性进行了比较;最后,在考虑地杂波干扰时,研究了杂波环境中埋地地雷目标的极化滤波增强技术,给出了收/发天线的最优极化状态。

In this paper, the fractional Brownian motion is used to simulate an actual surface and the small perturbation scattering model is explored. An expression of the scattering matrix from this fractal surface is obtained. The optimum polarization to reduce clutter is given. Then, the polarization property of landmine buried beneath a slightly rough surface is given, and the comparison with that of landmine buried below a flat surface is made. In the end, the paper researches the polarization filtering enhancement of buried landmines in soil surface clutter and the optimum polarization state of the transmitting/receiving antenna is given.