中文摘要：

介绍空间域InSAR干涉图的滤波方法,综合自适应中心加权中值滤波和最优方向滤波两种方法的思想,提出基于最优方向自适应中心加权中值滤波方法。分析边缘保持指数指标及其不足,提出改良的边缘保持指数指标。采用模拟数据和真实数据进行实验,结果表明,新滤波方法不仅具有较好的噪声平滑效果,而且有很强的边缘和细节信息的保持能力。

英文摘要：

Filtering methods of spatial InSAR（interferometric synthetic aperture radar）interferograms were introduced.A best-directional self-adaptive center-weighted median filter was proposed.The proposing of the new method synthesized the two filtering algorithms as self-adaptive center-weighted median filter and best-directional filter.Edge preservation index was analyzed and was found ineffective.Thus a modification of the evaluation index was proposed and used experimentally with simulated and truthful data.The experimental results show that the new filter performs well in both smoothing phase data and preserving edge information.