极化SAR图像中非平稳目标的检测与区分方法研究Detection and discrimination of nonstationary objects in polarimetric SAR images
王海江,皮亦鸣
摘要(Abstract)：
在合成孔径雷达(SAR)极化测量中,通常认为雷达视角相对于目标是不变的。然而实际上SAR通常具有较宽的方位向波束,在孔径合成过程中,所成的全分辨率SAR图像包含多个斜视角下的目标回波。极化参数的子孔径分析可以用来对成像过程表现出非平稳散射行为的媒质进行检测。本文提出了一套基于子孔径分解和对散射矩阵及参数进行统计分析的方法,来检测两类非平稳目标。仿真结果表明,这种方法具有较好的非平稳目标检测和区分性能。
关键词(KeyWords)： 极化SAR;子孔径分析;非平稳目标;极大似然比;Bragg;谐振
基金项目(Foundation): 国家自然科学基金资助项目(60772143);; 四川省青年科技基金会资助项目(06ZQ026-006)
作者(Author): 王海江,皮亦鸣
参考文献(References)：
- [1]Flake L R,Ahalt S C,and Krishnamurthy A K.Detecting aniso-tropic scattering with hidden Markov models[J].Proc.Inst.E-lect.Eng.—Radar,Sonar Navigat.,1997,144(2).
- [2]Runkle P,Nguyen L H,McClellan J H,and Carin L.Multi-as-pect target detection for SAR imagery using hidden Markov models[J].IEEE Trans.Geosci.Remote Sensing,2001(39).
- [3]Laurent Ferro-Famil,Andreas Reigber,Eric Pottier,and Wolf-gang-Martin Boerner.Scene characterization using subaperture po-larimetric SAR data[J].IEEE Trans.Geosci.Remote Sensing,2003,41(10).
- [4]Ainsworth TL,Jansen R W,Lee J S and Fiedler R.Subapertureanalysis of high resolution polarimetric SAR data[C]//Geosci-ence and Remote Sensing Symposium,.IGARSS'04.Proceed-ings USA,IEEE,1999.
- [5]Laurent Ferro-Famil,Andreas Reigber.Complex scene analysisfrom Time-Frequency statistics of POLSAR data[C]//Geosci-ence and Remote Sensing Symposium,2007.IGARSS2007 USA,IEEE,2007:5182-5185.
- [6]Moreira A.Real-time synthetic aperure radar(SAR)processingwith a new subaperture approach[J].IEEE Tran.On Geosc.and Rem.Sens.,1991,30(4).
- [7]Goodman N R.Statistical analysis based on a certain multi-variatecomplex Gaussian distribution(an introduction)[J]Ann.Math.Statist.,1963,(34).
- [8]Lee J S,Grunes M R,and Kwok R.Classification of multi-lookpolarimetric SAR imagery based on the complex Wishart distribu-tion[J].Int.J.Remote Sens.,1994,15(11).
- [9]Conradsen K,Nielsen A A,Schou J,and Skriver H.Change de-tection in polarimetric SAR data and the complex wishart distribu-tion[C]//In Proc.IGARSS,S.ney,Australia,2001.2628-2630.
- [10]Shane Robert Cloude,Eric Pottier.A review of target decompositiontheorems in radar polarimetry[J].IEEE Transactions on geoscienceand remote sensing,1996,34(2).
- [11]Shane Robert Cloude,Eric Pottier.An Entropy Based ClassificationScheme for Land Applications of Polarimetric SAR[J].IEEE trans-actions on geoscience and remote sensing,1997,35(1).
- [12]Laurent Ferro-Famil,Andreas.Reigber,and Eric Pottier.Sub-aperture polarimetric SAR data analysis[C]//Proceedings ofEUSAR,Cologne,Germany,2002.