地物杂波区内不同速度方差降雨回波信号损失比计算与分析

THE CALCULATION AND ANALYSES ON THE LOSS RATIO OF PRECIPITATION ECHOES WITH THE DIFFERENT VELOCITY DEVIATIONS SUPERIMPOSED TO THE GROUND CLUTTERS

本文对地物杂波区内不同速度方差的降雨回波信号经非相干MTI对消系统(地物杂波抑制器)输出后的交流功率变化(降雨回波损失比),作了详尽的理论计算和分析,提出了对该降雨回波信号的损失进行相应的补偿即能获取误差较小的地物杂波区内降雨回波信息的观点。使有效抑制地物杂波的非相干MTI技术应用更加广泛,有助于最终实现地物杂波区内降雨回波定量化。

This paper theoretically studies and analyzes the problem of ground clutter rejection on the AC power Variation or the loss ratib of precipitation echoes with the differernt velocity deviations superimposed. If we compensate the loss of the precipitation echo signal, it may be possible to get the precipitation echo informations superimposed to the ground clutters with less errors and will make the non-coherent MTI technique(which is effe ctive to reject the ground clutter) has wider application.