基于特征分解的高频地波雷达电离层杂波抑制  

Ionospheric clutter suppression in high frequency surface wave radar based on eigen decomposition

作　　者：熊新农[1] 柯亨玉[1] 万显荣[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430079

出　　处：《电波科学学报》2007年第6期937-940,981,共5页Chinese Journal of Radio Science

基　　金：国家高科技发展计划资助项目(2004AA604080);自然科学基金(60401003)

摘　　要：针对高频地波雷达中的电离层杂波,利用特征分解法在阵元-脉冲域和脉冲-距离域对它进行联合处理,并对特征分解法在脉冲-距离域和阵元-脉冲域分别进行了如下改进:在脉冲-距离域采用循环重构数据协方差矩阵,而在阵元-脉冲域则按扫频周期分段正交分解。OSMAR2003系统的实测数据表明:这种处理方法对抑制电离层杂波是有效的。In order to suppress ionospheric clutter in High Frequency Surface Wave Radar （HFSWR）, this paper proposes a modified method based on eigen decomposition to cooperate in the Pulse-Range （P-R） domain and in the Element-Pulse （E-P） domain. In the Pulse-Range （P-R） domain the eigen decomposition operated after the original covariance matrix was reconstructed. In the Element-Pukse （E-P） domain, the eigen decomposition was modified to become the orthogonal expansion and work after the coherent processing intervals was divided into the overlapped subsections. Experimental results confirm that the modified method can achieve effective ionospheric clutter suppression using the data recorded by the HFSWR OSMAR2003 （Ocean State Monitor and Analysis Radar,manufactured in 2003）.

关 键 词：高频地波雷达 电离层杂波 特征分解法 

分 类 号：TN957.54[电子电信—信号与信息处理]