雷达干涉条纹图滤波方法研究  

Research on filtering methods of InSAR interferogram

作　　者：李明亮[1] 母景琴[2] 王聪[1] 

机构地区：[1]中国矿业大学(北京)机电与信息工程学院 [2]唐山师范学院计算机科学技术系,河北唐山066000

出　　处：《计算机工程与设计》2008年第14期3782-3784,共3页Computer Engineering and Design

基　　金：河北省科技厅基金项目(02213508D、03213534);河北省科学技术研究与发展基金项目(05213510D)

摘　　要：在合成孔径雷达干涉测量中,为滤除干涉图像中存在的各种噪声,提高相位解缠结果及生成的数字高程模型的精度。从分析干涉条纹图的特点入手,对干涉条纹图的圆周期中值滤波法进行了研究,提出一种基于高斯噪声估计的自适应圆周期中值滤波方法,给出了算法设计及详细的实验数据并与其它滤波方法进行比较。试验结果表明,该方法可以较好地消除干涉图像中存在的噪声,而且保留更多的图像边缘、细节信息。In the technology ofinterferometric synthetic aperture radar （InSAR）, to eliminate all kinds of noise in interferogram, improve the result of phase unwrapping and the accuracy of DEM. The methods of filtering on the basis of analyzing the characteristic of stripe interferogram are researched. The periodic median filtering algorithm is analyzed at first, then adaptive periodic median algorithm is put forward which based on the noise estimation, and the arithmetic design and detailed experimental data are provided, it is compared with other filtering methods. The experimental result shows that the new method can eliminate the noise of intefferograrn effectly and hold more edge and detail information at the same time.

关 键 词：合成孔径雷达干涉测量 相位解缠 中值滤波 噪声估计 方差 

分 类 号：TN911.73[电子电信—通信与信息系统]