极化合成孔径雷达的模拟研究
THE SIMULATION STUDY ON POLARIMETRIC SYNTHETIC-APERTURE RADAR
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摘要: 该文介绍了作者在极化合成孔径雷达模拟研究方面的初步成果。建立了点阵目标的极化合成孔径雷达回波的数学模型;对模拟的回波数据进行了成像处理,得到了四种不同极化组合的复数图像;从复数图像中计算出了每个点目标的散射矩阵;利用极化合成技术生成了圆极化状态下的四幅图像;最后对仿真结果进行了分析。分析结果表明文中的方法是有效的。
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关键词:
- 合成孔径雷达; 散射矩阵; 极化合成
Abstract: This paper presents auther s primary results in the simulation study on polari-metric SAR. First, the mathematical model of the raw returns of multi-point targets received by the polarimetric SAR is established. Then four complex images of different transmit- and receive-polarizations are produced after imaging process. After that, the scattering matrix of every point target is computed based on the four complex images. Afterwards, four circular polarization images are produced using polarization synthesis. Finally, some analyses of the simulation results are presented. The results show the effectiveness of this simulation approach. -
Howard A. Zebker, Jakob J. Van ZYL, Danhiel N. Held, Imaging radar polarimetry from wave synthesis, Journal of Geophysical Research, 1987, 92(B1), 683-701.[2]Howard A. Zebker, Jakob J. Van ZYL, Imaging radar polarimetry: A review, Proc. IEEE, 1991,79(11), 1583-1606.[3]L.M.J. Brown, J. A. Conway, J. T. Macklin, Polarimetric synthetic-aperture radar: Fundamental concepts and analysis tools, GEC Journal of Research, 1991, 9(1), 23-35.[4]Yonghong Huang, Guy seguin, Nizar Sultan, Multi-frequency and multi-polarization SAR system analysis with simulation software developed at CSA, International Geoscience and Remote Sensing Symposium (IGARSS), Singapore, 1997, 536-538. -
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