北京航空航天大学学报 ›› 2001, Vol. 27 ›› Issue (6): 713-716.

• 论文 • 上一篇    下一篇

SAR图像非平稳性对图像模型和滤波降噪方法的影响

马作民, 毛士艺, 刘祥林   

  1. 北京航空航天大学 电子工程系
  • 收稿日期:2000-04-24 出版日期:2001-06-30 发布日期:2010-09-26
  • 作者简介:马作民(1971-),男,河北文安人,博士生,100083,北京.
  • 基金资助:

    国家自然科学基金资助项目(69831040)

Influence of Nonstationarity on SAR Imagery Models and De-Speckling Filters

MA Zuo-min, MAO Shi-yi, LIU Xiang-lin   

  1. Beijing University of Aeronautics and Astronautics, Dept. of Electronic Engineering
  • Received:2000-04-24 Online:2001-06-30 Published:2010-09-26

摘要: 从随机过程理论角度按平稳程度把合成孔径雷达(SAR)图像分为分辨单元内平稳、分辨单元内不平稳、处理窗内局部平稳和处理窗内局部不平稳4种情况,研究了非平稳性对图像的斑点乘性噪声模型、场景-斑点乘积模型和结构邻域模型的影响,得出各自的平稳性适用条件,并在此基础上评价了各种滤波降噪方法的性能,用实际数据进行了验证.

Abstract: From the stochastic process point of view, Synthetic Aperture Radar (SAR) images are divided into four cases as stationary within resolution cell, nonstationary within resolution cell, stationary within local processing window and nonstationary within local processing window according to their stationarities. Then the influence of nonstationarity on multiplicative noise model of speckle, scene-speckle product model and structured neighborhood model are investigated, stationarity satisfactory conditions of these models are derived respectively. The performances of various kinds of de-speckling filters are re-assessed based on the above analyses, and filtering results of real imagery are given.

中图分类号: 


版权所有 © 《北京航空航天大学学报》编辑部
通讯地址:北京市海淀区学院路37号 北京航空航天大学学报编辑部 邮编:100191 E-mail:jbuaa@buaa.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发