極化合成孔徑雷達的模擬研究
THE SIMULATION STUDY ON POLARIMETRIC SYNTHETIC-APERTURE RADAR
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摘要: 該文介紹了作者在極化合成孔徑雷達模擬研究方面的初步成果。建立了點陣目標的極化合成孔徑雷達回波的數(shù)學模型;對模擬的回波數(shù)據(jù)進行了成像處理,得到了四種不同極化組合的復數(shù)圖像;從復數(shù)圖像中計算出了每個點目標的散射矩陣;利用極化合成技術生成了圓極化狀態(tài)下的四幅圖像;最后對仿真結果進行了分析。分析結果表明文中的方法是有效的。
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關鍵詞:
- 合成孔徑雷達; 散射矩陣; 極化合成
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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