Optimization design of time synchronization system in ultraviolet limb imaging spectrometer

	Optimization design of time synchronization system in ultraviolet limb imaging spectrometer
	Dai S.; Wang H.; Yu T.; Song K.
	2014
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	ISBN/10072276
卷号	43 期号:7 页码:2270-2276
摘要	To improve the time synchronization precision of ultraviolet limb imaging spectrometer, the algorithm of clock drift rate calculation which was based on reference clock source was put forward. Firstly, the principle of limb time system was analyzed, then by using time tag unit of 1553B interface chip as clock reference source, the continual sample data was obtained and clock drift rate based on linear fit was calculated. Lastly, dynamic compensation of clock drift rate and optimization of limb system were realized. With using GPS time synchronization system, time synchronization system of high speed FPGA chip was designed, therefore dynamic changes of limb time synchronization errors were recorded by simulation and test equipment, furthermore limb time synchronization errors were measured dynamically. Time synchronization precision was measured. Experimental results indicate that time synchronization errors are no more than 13 ms for imaging beginning time error, the imaging finish time errors no more than 466.8 ms in different imaging time and no more than 362.5 ms in different integration time, which meets the demand of no more than 512 ms of qualification.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44237
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Dai S.,Wang H.,Yu T.,et al. Optimization design of time synchronization system in ultraviolet limb imaging spectrometer[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2014,43(7):2270-2276.
APA	Dai S.,Wang H.,Yu T.,&Song K..(2014).Optimization design of time synchronization system in ultraviolet limb imaging spectrometer.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,43(7),2270-2276.
MLA	Dai S.,et al."Optimization design of time synchronization system in ultraviolet limb imaging spectrometer".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 43.7(2014):2270-2276.

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