Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Acta Optica Sinica》 2016-06
Add to Favorite Get Latest Update

Theory and Precision Maintenance Method of On-Orbit Reflectance Calibration

Huang Wenxin;Zhang Liming;Si Xiaolong;Cao Xingjia;Zhu Xuemei;Li Mengfan;Hefei Institute of Physical Science,Chinese Academy of Sciences;Key Laboratory of Optical Calibration and Characterization,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences;  
The theory of on-orbit reflectance calibration of the solar diffuser panel is expounded and the physical model of on-orbit reflectance calibration is established.As the precision of on-orbit calibration is affected mostly by the degeneration of the solar diffuser's bidirectional reflectance distribution function(BRDF),the method of monitoring the degeneration of BRDF is discussed.According to the monitoring physical model of the solar diffuser stability monitor of the moderate resolution imaging spectroradiometer(MODIS)and the problem founded in the onorbit performance evaluation,an optical structure of integrating sphere with two imports for light and a baffle inside is proposed.The parameters in its physical model are decreased and some factors that bring uncertainties are cut down while the function can be ensured.It is validated that the optical structure can prevent the sun view response from the ripple signal response in experiment.Based on the physical model of the new optical structure and the domestic testing level,the uncertainty of this system is estimated,and it can be less than 0.68%.
【Fund】: 国家自然科学基金(41301374)
【CateGory Index】: O435
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved