中南大学学报（自然科学版）2011，Vol.42Issue(6)：1738-1742,5.
基于提升静态小波变换的风廓线雷达地杂波抑制方法
Removing ground clutter from wind profiler data based on lifting static wavelet transforms
摘要
Abstract
In the existing method based on wavelet discrete wavelet transform (DWT) to removing ground clutter from wind profiler data, it is difficult to determine the best decomposition level and the threshold, and the DWT has not the characteristics of translation invariance of the wavelet coefficients. The lifting methods of static wavelet transform (SWT) was introduced firstly. And then a method to removing ground clutter from wind profiler data based on Lifting Static Wavelet Transforms was proposed. This method determines the best decomposition level by calculating the 2-order moment of the wavelet coefficients at all levels, and select the threshold through the average of the two bands which are adjacent to the clutter band. The new methods can be applied to lower signal to clutter ratio (SCR) whose calculation amount is a little more than that of the traditional method. The simulation results show the validity of the algorithm.关键词
风廓线雷达/地杂波/静态小波变换/阈值Key words
wind profiler radar/ ground clutter, static wavelet transform/ threshold分类
信息技术与安全科学引用本文复制引用
张雯雯,刘黎平,阮征,葛润生..基于提升静态小波变换的风廓线雷达地杂波抑制方法[J].中南大学学报（自然科学版）,2011,42(6):1738-1742,5.基金项目
国家高技术研究发展计划项目(407705021) （407705021）
