【摘要】 介绍小波分析的基本理论和利用小波分析对信号进行消除噪声的基本方法,以及In SAR干涉相位图像中噪声的特点。针对目前普遍采用的均值滤波和中值滤波等方法对InSAR干涉相位图像中噪声进行滤波的局限性,提出一种基于小波分析和中值滤波相结合的InSAR干涉相位图滤波算法以改善滤波效果。实验证明该算法的有效性。更多还原

【Abstract】 The basic theory of wavelet analysis and the methods of noise elimination for signals with wavelet analysis are introduced, and the characteristics of noise in phase interferogram are dissertated. The average-value-filter and the median-value-filter are employed usually in phase interferogram, and the result was not satisfactory. An algorithm of interferometric phase filter of InSAR based on wavelet analysis and median filter algorithm is advanced to improve the result, and experiments demonstrated the validity of the algorithm.更多还原