Program-controlled sun-tracking precision of spaceborne solar irradiance monitor

	Program-controlled sun-tracking precision of spaceborne solar irradiance monitor
	Yang, D.-J.; W. Fang; X. Ye and B.-Q. Song
	2015
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号	23 期号:7 页码:1813-1821
摘要	To avoid the function failure of a solar irradiance monitor (SIM) caused by the pointing faults of the Digital Sun Sensor (DSS), the program-controlled sun-tracking of SIM on the FY-3(03) satellite was explored as the backup sun-tracking, and its precision was analyzed. By using the Julian day time and the satellite orbital parameters, the sun vector in orbital coordinate system, pitch angle and the yaw angle were deduced on the basis of Baseline Surface Radiation Network (BSRN)-like algorithm. The calculated results were compared to that of the satellite-given sun-pointing data, it shows that the sun vector deviations in three axes are all less than 0.1, and the average deviations of pitch angle and yaw angle are 0.0246 and -0.0804 respectively. Using the program-calibrated sun-pointing data of many orbits, a sun-tracking control simulation experiment was carried out, and the results show that the pitch tracking control precision is better than 0.1, and the yaw tracking control precision is better than 0.05. To guarantee the on-orbit tracking precision, the pitch zero-position angle and the yaw zero-position angle were measured, and they are 80.46 and -36.96 respectively. The final analysis results show that the pitch tracking uncertainty is 0.318 and the yaw tracking uncertainty is 0.316, meeting SIM sun-tracking precision requirement of 0.5. The proposed program-controlled sun-tracking reduces the dependence on the optical pointing devices, and improves on-orbit sun-tracking reliability. , 2015, Chinese Academy of Sciences. All right reserved.
文章类型	期刊论文
收录类别	EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/56122
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Yang, D.-J.,W. Fang,X. Ye and B.-Q. Song. Program-controlled sun-tracking precision of spaceborne solar irradiance monitor[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2015,23(7):1813-1821.
APA	Yang, D.-J.,W. Fang,&X. Ye and B.-Q. Song.(2015).Program-controlled sun-tracking precision of spaceborne solar irradiance monitor.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,23(7),1813-1821.
MLA	Yang, D.-J.,et al."Program-controlled sun-tracking precision of spaceborne solar irradiance monitor".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 23.7(2015):1813-1821.

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