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地物微波辐射亮温的图像模拟方法
Image Simulation for Ground Objects Microwave Radiation
查看参考文献11篇
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文摘
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微波辐射亮温图像的模拟在被动遥感领域中具有重要意义.该文根据射线追踪的思想提出了一种三维场景微波辐射图像的模拟方法:亮温追踪法.分析了模拟时必须考虑的天空背景辐射、多次反射造成的极化旋转以及天线平滑作用等影响因素,最终建立了微波辐射亮温图像的模拟方法.应用此方法对典型目标进行了试验模拟,并对模拟结果所表现出的微波辐射现象进行了分析.为验证模拟方法的可靠性,该文对楼层建筑以及飞机跑道等实际场景进行模拟,模拟结果与实地测量图像取得了很好的一致,表明此方法完全可行. |
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其他语种文摘
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The simulation of brightness temperature image is a necessary work in the passive microwave remote sensing. This paper introduces the brightness temperature tracing method for 3-D scene microwave radiometric image simulation,and describes the general requirements and considerations such as sky radiation,antenna smoothing and polarization rotation caused by multiple-reflection. Then a simulation model is established which can create more realistic imagery and reproduce the radiation phenomenology. Using this model the microwave radiometric phenomenology which is greatly deferent from optical and infrared ones is analyzed. Finally,the Lab building and airstrip are simulated in order to validate this model. The comparisons with field measurements indicate that this model is completely feasible in practice. |
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来源
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电子与信息学报
,2007,29(11):2725-2728 【核心库】
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关键词
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被动微波成像
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亮温追踪
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多次散射
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极化旋转
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地址
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中国科学院空间科学与应用研究中心, 国家863计划微波遥感实验室, 北京, 100080
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1009-5896 |
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学科
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自动化技术、计算机技术 |
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文献收藏号
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CSCD:3004530
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