基于小波分析的高频地波雷达电离层杂波抑制  

Wavelet analysis-based suppression of ionospheric clutter in high frequency surface wave radar

作　　者：熊新农[1] 万显荣[1] 柯亨玉[1] 钟志峰[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430072

出　　处：《华中科技大学学报（自然科学版）》2008年第6期77-80,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家高技术研究发展计划资助项目(2004AA604080);国家自然科学基金资助项目(60401003)

摘　　要：针对高频地波雷达电离层杂波,提出了一种新的抑制方法.该方法引入虚拟跳频技术,并与小波分析相结合,更好地进行了杂波抑制.通过频率虚拟跳变去除相邻回波脉冲间的相关性,人为地多次调整相位序列,起到统计平均的作用,而且可以配合小波变换中尺度参数和平移参数的调节,弥补单纯利用小波分析的不足.实测数据处理结果表明,该方法对电离层杂波具有很好的抑制效果.For high frequency surface wave radar ionospheric clutter, a method was proposed. This method used wavelet analysis, combined with dummy frequency agility, which was used to eliminate the correlation of adjacent echo pulse and achieve statistic effect by changing phase series on many occasions. Changing phase series in some extent were co-operated with changing the scale and wavelet location variables to remedy the defects of the original method with the help of wavelet analysis. Experimental results show that the ionospheric clutter can be suppressed by this method effectively.

关 键 词：小波分析 虚拟跳频 高频地波雷达 电离层杂波 抑制 

分 类 号：TN957.54[电子电信—信号与信息处理]