在小波多分辨分析的基础上,在各个尺度上分别用协方差矩阵法计算极化参数,给出在不同的尺度上选取相应的时窗长度的方法,对协方差矩阵法不能计算的各个尺度位移的开始和结束处用瞬时法计算极化参数.这种方法有效地解决了协方差矩阵法时窗长度的选取和参数计算时存在的边界问题以及瞬时极化分析法对瞬时干扰的敏感问题.“,”On the basis of the wavelets multiresolution analysis, the polariation paramters on each scale are calculatd using the covariance matrix method. Th detrmination of the time window length on th diffrent scal is presentd. Thee polarization parameters at the starting and end of the translation on each stal which can not solved by the covariance matrix method are calculated with the instantanous analytical method. This technique solves the problems on th determination of th tim window length and the calculationn of the boundary paramtrs, is. less sensitive to common noise sources compared with the instantanous analysical method.