| 基于正则化方法的毫米波图像亮温反演 |
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| 引用本文： | 王桂丽,李兴国.基于正则化方法的毫米波图像亮温反演[J].南京理工大学学报(自然科学版),2010,34(1). |
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| 作者姓名： | 王桂丽 李兴国 |
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| 作者单位： | 1. 南京理工大学,电子工程与光电技术学院,江苏,南京,210094;安徽师范大学,物理与电子信息学院,安徽,芜湖,241000
2. 南京理工大学,电子工程与光电技术学院,江苏,南京,210094 |
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| 基金项目： | 安徽省高校优秀青年人才基金(2010SQRL029) |
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| 摘 要： | 为了提高毫米波辐射图像的分辨率,该文采用正则化的方法对毫米波图像进行亮温反演。根据毫米波辐射图像的退化因素,分析了毫米波辐射计天线的亮温模型,给出了毫米波图像的离散退化函数。引入半二次正则化方法对毫米波图像进行亮温反演,该方法可以将图像退化函数从病态方程转换成确定性迭代算法,从而快速解出高分辨毫米波辐射图像。仿真结果表明该方法有效地提高了图像的分辨率,且所需时间短,满足实时性的要求。
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| 关 键 词： | 毫米波图像 辐射计 半二次正则化 亮温反演 |
Retrieval of Brightness Temperature Based on Regulation for Millimeter Wave Image |
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| WANG Gui-li,LI Xing-guo.Retrieval of Brightness Temperature Based on Regulation for Millimeter Wave Image[J].Journal of Nanjing University of Science and Technology(Nature Science),2010,34(1). |
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| Authors: | WANG Gui-li LI Xing-guo |
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| Institution: | 1.School of Electronic Engineering and Optoelectronic Technology/a>;NUST/a>;Nanjing 210094/a>;China/a>;2.School of Physics and Electronic Information/a>;Anhui Normal University/a>;Wuhu 241000/a>;China |
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| Abstract: | In order to improve the resolution of the images,a regularization method is adopted in inversing millimeter wave(MMW) radiation images.According to the degradation factors of MMW images,by analyzing the brightness temperature model of MMW radiometer,the discrete degradation function of MMW image is obtained.The retrieval of brightness temperature is implemented with half-quadratic regulation,and the degradation function is transformed from ill-posed equation into deterministic algorithm.Consequently,the hig... |
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| Keywords: | millimeter images radiometers half-quadratic regulation brightness temperature retrieval |
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