关键词: 二维短时傅里叶变换, 干涉合成孔径雷达, 干涉相位图, 滤波

Abstract: An interferometric phase noise reduction algorithm based on two-dimensional windowed fourier transform（WFT） is proposed.Firstly，the interferogram phases are transformed into an exponential field，the exponential data are processed by WFT，a threshold is selected to reduce noise，and the filtered exponential data are obtained by inverse WFT（IWFT）.Finally，the filtered wrapped phases are computed by filtered exponential data.The result shows that the new method is powerful to interferogram speckle noise suppression，and residues are removed，as well as it can be preserved fine phase details and fringes’ structures.The proposed method can improve the accuracy of interferometric products.

Key words: two-dimensional windowed fourier transform, InSAR, interferogram, filtering