NDLI: Study on the relative radiometric correction of CBERS satellite CCD image

Content Provider	Springer Nature Link
Author	Guo, Jianning Yu, Jin Zeng, Yong Xu, Jianyan Pan, Zhiqiang Hou, Minghui
Copyright Year	2005
Abstract	The main payload on CBERS-01/02 of China-Brazil Earth Resources Satellite (CBERS) is a push-broom CCD camera with moderate spatial and radiant resolution. Because at lab the data for calibration at satellite assembly stage were unable to be collected, and also because the onboard calibrator after launch was in a different state from imaging, the calibration of CCD image got a series of difficulties involved. In practice, two methods are used in the processing on the ground station: One is extracting calibration data by statistics from the image itself, and the other is the method of histogram match. It was proved that the latter can calibrate the image much better, because it can remove the effect of unstable response of the camera largely and also can overcome the nonlinearity of the camera basically by using Look-Up Table (LUT) calculated from histogram statistics of different temporal images. Considering the problems of CBERS-01, a lot of calibration tests were done before the launch of CBERS-02, in which a set of lab coefficients for relative calibration was formulated after the data collection by using integration-hemisphere in the stage of satellite assembly test. During the on-orbit test, it was found that the calibration result from such coefficients was not satisfying, especially there being response difference between 3 detector arrays, which was attributed to the unstable dark currents of the CCD camera. This paper comes up with a statistic method to remove such response difference. In this method the middle detector array was used as reference to find the response differences of adjacent similar features between these arrays and it was proved to have a broad adaptability.
Starting Page	12
Ending Page	28
Page Count	17
File Format	PDF
ISSN	10069321
Journal	Science in China Series E: Technological Sciences
Volume Number	48
Issue Number	2
e-ISSN	1862281X
Language	English
Publisher	Science in China Press
Publisher Date	2005-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	CBERS satellite CCD camera relative radiometric calibration relative radiometric correction assembly test Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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Study on the relative radiometric correction of CBERS satellite CCD image

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