| 不同入射角下的雷达后向散射系数图像模拟 |
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| 引用本文： | 魏丹婷,塔西甫拉提·特依拜,雷磊,张飞,韩桂红,买买提沙吾提.不同入射角下的雷达后向散射系数图像模拟[J].遥感信息,2012,27(3):54-59. |
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| 作者姓名： | 魏丹婷 塔西甫拉提·特依拜 雷磊 张飞 韩桂红 买买提沙吾提 |
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| 作者单位： | 新疆大学资源与环境科学学院,乌鲁木齐830046;新疆大学绿洲生态教育部重点实验室,乌鲁木齐830046 |
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| 基金项目： | 国家自然科学基金项目，国家自然科学青年基金项目，新疆自然科学基金项目，资源与环境信息系统国家重点实验室开放基金 |
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| 摘 要： | 选择了新疆渭库三角洲(库车县、新和县、沙雅县)为实验区,利用Ulaby和Chapp的后向散射模型分别模拟了HV极化和HH极化的入射角为20°、24°、30°、33°、37°和40°的雷达后向散射系数图像。分析了不同入射角下图像各点后向散射系数值的散点图以及统计特征,得出由于入射角度的变化,两种极化的图像后向散射系数值变化较大,其变化趋势均符合余弦函数曲线分布,且模拟SAR图像很好的保留了地面散射信息。
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| 关 键 词： | Radarsat-2 入射角 后向散射系数 点散射体模型 |
Simulation of Radar Backscattering Coefficient Image at Different Incidence Angle |
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| WEI Dan-ting
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TASHPOLAT. Tiyip
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LEI Lei
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ZHANG Fei
,
HAN Gui-hong
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MAMATSAWUT.Simulation of Radar Backscattering Coefficient Image at Different Incidence Angle[J].Remote Sensing Information,2012,27(3):54-59. |
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| Authors: | WEI Dan-ting TASHPOLAT Tiyip LEI Lei ZHANG Fei HAN Gui-hong MAMATSAWUT |
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| Affiliation: | WEI Dan-ting①,②,TASHPOLAT.Tiyip①,②,LEI Lei①,②,ZHANG Fei①,②,HAN Gui-hong①,②,MAMATSAWUT①,②(① College of Resources and Environment Science,Xinjiang University Urumqi,Xinjiang 830046; ② Key Laboratory of Oasis Ecology,Xinjiang University Urumqi,Xinjiang 830046) |
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| Abstract: | Synthetic Aperture Radar(SAR)image simulation techniques are widely used in the SAR system design and verification,SAR image orthorectification,SAR image interpretation and target identification.With the development of the SAR,it is necessary to simulate more SAR images.This article chose the WeiKu delta(KuChe,XinHe,ShaYa counties) in XinJiang as an experimental area,using the Ulaby and Chapp backscattering models to simulate the HV and HH polarization radar backscattering coefficient image at the incidence angle of 20°,24°,30°,33°,37° and 40° respectively.We analyzed the scatter plot and statistical characteristics at different incidence angle.The results show:the two polarization backscattering coefficients change fiercely because of the incidence angle changes and its tendency conforms to the cosine function curve distribution;the simulated SAR image keeps the ground scattering information well. |
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| Keywords: | Radarsat-2 incidence angle backscattering coefficient point scattered model |
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