多視極化合成孔徑雷達(dá)圖象的分類和極化通道優(yōu)化
CLASSIFICATION OF MULTI-LOOK POLARIMETRIC SAR IMAGERY AND POLARIZATION CHANNEL OPTIMIZATION
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摘要: 本文提出一個(gè)新的最大似然(ML)分類算法對(duì)多視全極化合成孔徑雷達(dá)(SAR)圖象進(jìn)行分類,給出了應(yīng)用NASA/JPL機(jī)載L波段四視全極化SAR實(shí)測(cè)數(shù)據(jù)的試驗(yàn)結(jié)果,證明了新算法的有效性。此外,本文還將所提算法應(yīng)用于部分的多視全極化SAR數(shù)據(jù)中,實(shí)現(xiàn)了地貌類型分類的極化通道優(yōu)化。
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關(guān)鍵詞:
- 極化合成孔徑雷達(dá); 多視處理; 相干斑; 分類; 極化通道優(yōu)化
Abstract: In this paper, a new maximum likelihood (ML) classification algorithm is proposed to classify the multi-look polarimetric synthetic aperture radar (SAR) imagery. Experimental results with the NASA/JPL airborne L-band 4-look polarimetric SAR data demonstrate the effectiveness of the new algorithm. Furthermore, when using the algorithm in the classifications with subsets of the multi-look polarimetric SAR data, the polarization-channel optimization for the terrain type classification is implemented. -
Lim H, Swartz A A, et al. Classification of earth terrain using polarimetric SAR images[J].J. of Geophysical Research.1989, 94(136):7049-7057[2]De Grandi G, Lemoine G, Sieber A. Supervised Fully Polarimetric Classification: An Experimental Study on the Maestro-1 Freiburg Data Set. Proc. IGARSS92, Huston, TX, USA: 1992, 782-785.[3]Kong J A, Swartz A A, et al. Identification of terrain cover using the optimum polarimetric classifier. J. of Electromag. Waves and Appl., 1988, 2(2): 171-194.[4]Lee J S, Gruns M R. Classification of multi-look polarimetric SAR imagery based on complex Wishart[5]distribution. Int[J].J. Remote Sensing.1994, 15(11):2299-2311[6]Frost V S, Yurovsky L S. Maximum likelihood classification of synthetic aperture radar imagery[J].Computer Vision, Graphic and Image Processing.1985, 32(2):291-313[7]Lin Q, Allebach J P. Combating speckle in SAR imagery: Vector filtering and sequential classification based on a multiplicative noise model. IEEE Trans. on GE, 1990, GE-28(4): 674-653.[8]Ulaby F T, Elachi C (Ed.). Radar Polarimetry for Geoscience Application, MA: Artech House INC, 1990, Ch. 2.[9]劉國(guó)慶.極化合成孔徑雷達(dá)成像的理論分析及應(yīng)用研究:[博士論文].成都:電子科技大學(xué),1996. -
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