分型海面对极化电磁波散射的影响.pdf

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第 24 卷第 12 期电子测量与仪器学报 Vol. 24 No. 12
2010 年 12 月 JOURNAL OF ELECTRONIC MEASUREMENT AND INSTRUMENT · 1137 ·

DOI: .
分型海面对极化电磁波散射的影响
郭丁 1, 2, 3 顾行发 1, 2, 3 余涛 2, 3 谢涛 2
(1. 电子科技大学自动化工程学院, 成都 610054;
2. 中国科学院遥感应用研究所, 北京 100101;
3. 国家航天局航天遥感论证中心, 北京 100101)
摘要: 海面粗糙度对电磁波极化信号有显著影响。应用分型二维海面模型模拟了海面的起伏形态, 再通过极化散射矩阵
﹑斯托克斯矩阵以及极化电磁波散射理论, 对大量的散射海面进行模拟研究后得出, 电磁波的角偏移只与受照射的雷达入射角
相关, 与海面的粗糙度及主浪波长均无关, 进一步分析得出电磁波的偏心率仅在主浪波长改变的时刻改变。
关键词: 极化; 分型; 海面; SAR
中图分类号: TP 751 文献标识码: A 国家标准学科分类代码:
Effects fractal ocean surface on microwave
Guo Ding1, 2, 3 Gu Xingfa1, 2, 3 Yu Tao2, 3 Xie Tao2, 3
(1. University of Electronic Science and Technology of China, 610054, Chengdu 610054, China;
2. State key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, CAS. , Beijing 100101, China
3. Domonstration center for spaceborne Remote Sensing, China National Spoue Adminis tration, Beijing 100101, China)
Abstract: Ocean surface roughness have very great impact on the polarization ic wave signals. In this
paper, two-dimensional fractal surface model has been used to simulate the fluctuation form of the ocean. Then utilized the
polarization scattering matrix, Stokes matrix and the wave scattering theory, analysing the simulated ocean surface, it is
concluded that the shift angle is only affected by inci