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Overview of the Onboard Calibration Techniques Applied in Ocean Color Satellites
Pages: 113-121
Year: Issue:  1
Journal: Ocean Technology

Keyword:  ocean color satellitecalibrationoverview;
Abstract: The onboard calibration technique is the basis of other satellite calibration processes,for it can be used to determine the accurate relationship between detected digital number of remote sensor and the radiance at the entrance to the instrument’s aperture.As a result,the technique of onboard calibration of ocean color satellite has become an increasing research focus.Combined with the development process of onboard calibration on ocean color satellites,this paper introduces three kinds of onboard calibration modes,with their principles,advantages and defects further discussed.The principle of solar calibration is studied in detail.This paper also focuses on the introduction of calibration source energy as well as its calibrating process as it is transmitted in the optical system.Besides,it shows the principle and procedures of onboard spectral calibration,and analyzes the uncertainty source of onboard calibration.In addition,suggestions are proposed for the onboard calibration scheme of future ocean color satellites.
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