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Retrieval of Brightness Temperature Based on Regulation for Millimeter Wave Image


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Retrieval of Brightness Temperature Based on Regulation for Millimeter Wave Image
WANG Gui-li12LI Xing-guo1
1.School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China;2.School of Physics and Electronic Information,Anhui Normal University,Wuhu 241000,China
millimeter images radiometers half-quadratic regulation brightness temperature retrieval
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 high resolution MMW image is solved rapidly by the algorithm.The simulation results show that the method is rapid in inversing the brightness temperature and can improve the image resolution effectively and meet the real-time requirements.


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Last Update: 2012-11-02