电子学报2012，Vol.40Issue(8)：1544-1551,8.DOI:10.3969/j.issn.0372-2112.2012.08.008
干涉图幅度统计分布模型族及其参数估计
Interferometric Magnitude Modeling and Parameter Estimation
摘要
Abstract
The paper proposes a group of new distributions for interferometric magnitude and their corresponding parameter estimators.Firstly, under the frame of multiplicative model,based on the complex Wishart distribution,and bringing in the theory of clutter classification brought forward by Frery et al., the new interferometric magnitude' s statistical models are deduced according to utilizing the reciprocal of a square root of Gamma and the square root of generalized inverse Gaussian law. The group of new models can precisely model the interferometric magnitude corresponding to different clutter areas with broad degrees of homogeneity, and they achieve the unification of the statistical distributions for single-channel SAR images and multi-channel SAR interferometric magnitude.Secondly,The new models' estimators are acquired based on the Mellin transform which can estimate the contained parameters quickly and accurately,guaranteeing the new distributions' fitting precision. According to the experiments performed on the real spacebome SAR image,using the Kullback-Leibler (KL) distance,mean square error (MSE) and Kolmogorov-Smirnov (KS) test as similarity measurements, the experimental results show the effectiveness of the proposed models and estimators.关键词
干涉图/统计模型/E-Gamma分布/E-G0分布/E-G分布Key words
interferogram/ statistical model/ E-Gamma distribution/ E-G° distribution/ E-G distribution分类
信息技术与安全科学引用本文复制引用
时公涛,陈涛,陈东,桂琳,庞怡杰,王晶,张小义..干涉图幅度统计分布模型族及其参数估计[J].电子学报,2012,40(8):1544-1551,8.基金项目
国家自然科学基金(No.61101213,61040043) （No.61101213,61040043）
国防科技大学博士创新基金 （）
湖南省研究生创新基金 （）
