An Approach to Correction of Ionospheric Phase Contamination in HF Skywave Radar Systems

摘要：

In high frequency (HF) skywave over-the-horizon radar (OTHR), radar signals are subjected to phase contamination as they propagate through the ionosphere, leading to severe degradation capability of OTHR radar, so that it needs to be corrected. According to the high spatial correlativity of the ionosphere contamination and the adjacent range cells are subjected to the same contamination, a new approach is applied to the ionosphere decontamination of OTHR echoes based on maximum likelihood estimation auto-focus method in ISAR and clutter suppression. The decontamination procedure is divided into two steps: firstly eigenvector projection is used to preprocess signals, and secondly using maximum likelihood estimation method to estimate contamination. The simulation and real data processing results show that the method is of effectiveness and robust performance on different kinds of ionospheric phase contaminations.

关键词： over-the-horizon radar (OTHR) correction of ionosphere contamination eigenvector projection maximum likelihood estimation method

作者: Chen Jianwen Luo Huan Zhao Zhiguo Bao Zheng

作者单位: Key Research Lab,Wuhan Radar Institute Wuhan, Hubei, China

会议类型: 国际会议

会议名称: 2011 IEEE CIE International Conference on Radar(2011年IEEE国际雷达会议RADAR 2011)

会议地点: 成都

会议语种:英文

页码: 126-129

在线出版日期: 2011-10-24（万方平台首次上网日期，不代表论文的发表时间）