摘要
在航海雷达中 ,雷达信号存在着内部噪声、雨雪杂波、海杂波和同频干扰等杂波。而基于小波变换的雷达杂波抑制方法是一种不依赖于杂波统计分布特性 ,对各种分布的雨雪和海浪杂波都有良好适应性的方法。算法的选择是对该方法进行实际应用的关键 ,由这一点 ,从多角度出发 ,对此种方法在应用中小波基和算法选取进行讨论。结果表明 ,硬阈值处理、非降样算法的 4尺度Haar小波比较适合进行基于小波分析的雷达信号杂波抑制处理。
There are many kinds of clusters in radar signals. The method of radar clutter suppression based on wavelet is a kind of method that doesn't depend on the clutter's statistical characteristics. The selection of algorithm is the key to put this method to use. In this paper, the selection of wavelet and algorithm is discussed from different angles of view. And it is concluded that 4 level Haar wavelet and hard threshold is more suitable for radar clutter suppression.
出处
《中国航海》
CSCD
北大核心
2002年第3期18-21,共4页
Navigation of China
关键词
小波分析
雷达信号
杂波抑制
算法选择
航海
Wavelet analysis
Radar signal
Clutter suppression
Algorithm selection
