高频雷达回波信号去电离层污染  

Ionosphere Decontamination of High Frequency Radar Echoes

作　　者：陈希信[1] 黄银河[1] 

机构地区：[1]南京电子技术研究所,南京210013

出　　处：《现代雷达》2007年第2期41-43,51,共4页Modern Radar

摘　　要：高频雷达回波信号受到电离层污染从而影响了雷达的探测性能,因此需要进行去污染处理。该文通过对高频雷达信号处理过程的分析,阐明了电离层扰动对回波信号污染的机理。根据电离层污染具有高度空间相关性的特点,将成像雷达中的秩一相位误差估计聚焦方法适当修正后应用于高频雷达回波信号去电离层扰动污染。仿真研究证明了该文方法的良好去污染效果。The ionosphere contamination imposing on the High-frequency （HF） radar echoes has to be suppressed since it severely degrades the detection performance of HF radar. In this paper, the mechanism of the ionosphere contamination from the ionosphere distortion is exposed for the first time by analyzing the process of HF radar signal processing. According to the high spatial correlativity of the ionosphere contamination, then the rank one phase error estimation [ ROPE） auto-focus method in imaging radar is suitably modified and applied to the ionosphere decontamination of HF radar echoes. Finally the simulation examples are presented and the excellent performance of this approach is demonstrated.

关 键 词：高频雷达 电离层污染 秩-相位误差估计 

分 类 号：TN958[电子电信—信号与信息处理] TN957.51[电子电信—信息与通信工程]