A simulation analysis of systematic errors in ion arrival angle and drift velocity from the satellite borne ion drift meter

	A simulation analysis of systematic errors in ion arrival angle and drift velocity from the satellite borne ion drift meter
	Feng, Yubo; Wang, Shijin; Kong, Linggao
刊名	ADVANCES IN SPACE RESEARCH
	2011
卷号	47 期号:11 页码:1958-1964
关键词	IDM Ionosphere Grids Error Simulation
ISSN号	0273-1177
通讯作者	Feng, YB (reprint author), Chinese Acad Sci, Ctr Space Sci & Appl Res, Beijing 100190, Peoples R China.
中文摘要	As one payload of a Chinese seismic satellite program, an ion drift meter (IDM) will measure drift velocity of thermal ions at an altitude of 500 km. Previous works have shown that such instruments use biased grids to create nonuniform potential in the grid planes, which brings systematic errors to the inferred parameters. A commercial finite element analysis software is used to simulate this instrument in the exact size. The error sources from thermal velocity, nonuniform transparency of real grids and potential depression in the grid planes are explained. The simulation results show that the arrival angle and drift velocity will be underestimated in all the conditions and the maximal error will be about -0.87 degrees and -121 m/s, respectively. Furthermore, the relative error of the inferred arrival angle and the drift velocity will be inversely correlated with the arrival angle because of the lensing effect of the potential depression. This simulation provides a quantificational method of evaluating and correcting the data during in situ operation. (C) 2011 COSPAR. Published by Elsevier Ltd. All rights reserved.
英文摘要	As one payload of a Chinese seismic satellite program, an ion drift meter (IDM) will measure drift velocity of thermal ions at an altitude of 500 km. Previous works have shown that such instruments use biased grids to create nonuniform potential in the grid planes, which brings systematic errors to the inferred parameters. A commercial finite element analysis software is used to simulate this instrument in the exact size. The error sources from thermal velocity, nonuniform transparency of real grids and potential depression in the grid planes are explained. The simulation results show that the arrival angle and drift velocity will be underestimated in all the conditions and the maximal error will be about -0.87 degrees and -121 m/s, respectively. Furthermore, the relative error of the inferred arrival angle and the drift velocity will be inversely correlated with the arrival angle because of the lensing effect of the potential depression. This simulation provides a quantificational method of evaluating and correcting the data during in situ operation. (C) 2011 COSPAR. Published by Elsevier Ltd. All rights reserved.
学科主题	空间环境
收录类别	SCI ; EI
语种	英语
公开日期	2014-12-15
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/2930]
专题	国家空间科学中心_空间环境部
推荐引用方式 GB/T 7714	Feng, Yubo,Wang, Shijin,Kong, Linggao. A simulation analysis of systematic errors in ion arrival angle and drift velocity from the satellite borne ion drift meter[J]. ADVANCES IN SPACE RESEARCH,2011,47(11):1958-1964.
APA	Feng, Yubo,Wang, Shijin,&Kong, Linggao.(2011).A simulation analysis of systematic errors in ion arrival angle and drift velocity from the satellite borne ion drift meter.ADVANCES IN SPACE RESEARCH,47(11),1958-1964.
MLA	Feng, Yubo,et al."A simulation analysis of systematic errors in ion arrival angle and drift velocity from the satellite borne ion drift meter".ADVANCES IN SPACE RESEARCH 47.11(2011):1958-1964.