星载单频GPS数据的电离层延迟改正方法分析

屈小川; 李征航; 龚晓颖

星载单频GPS数据的电离层延迟改正方法分析

武汉大学测绘学院, 武汉 430079

基金项目: 国家863计划项目资助项目(2009AA12Z301)

详细信息

中图分类号: P 228
计量
- 文章访问数: 3006
- HTML全文浏览量: 112
- PDF下载量: 719
- 被引次数: 0
出版历程
- 收稿日期: 2010-10-11
- 网络出版日期: 2012-02-29

Analysis on ionospheric delay correction method of space-borne single-frequency GPS data

School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China

摘要

摘要: 利用C/A码单点定位对LEO(Low Earth Orbit)卫星上的电离层延迟改正方法——"电离层比例因子法"进行了分析研究.计算的CHAMP卫星的轨道结果表明:采用电子密度峰值高度(hmF2,F2 region maximum electron density height)平均值和瞬时值计算的电离层比例因子α变化范围分别为0.3~0.4和0.2~0.65之间,两者最大差异可达0.3,相比较而言,hmF2瞬时值的结果更加合理,并且相应的大地高H方向的系统偏差要降低0.05~0.3m左右;与双频无电离层组合的普通单点定位结果相比表明该方法能较好地消除电离层一阶项所引入的H方向上的系统偏差;该方法适用的LEO卫星轨道高度范围大致在200~ 600km之间,当轨道高度超过700km时,该方法并不适用.
- 单频GPS接收机 /
- 电离层比例因子法 /
- 单点定位 /
- 电子密度峰值高度
Abstract: With the technology of standard point positioning based on C/A code received by low earth orbit(LEO), one of the ionospheric delay correction method,the method of ionospheric scale factor, was discussed. The computed ionospheric scale factor α using the mean and instantaneous value of F2 region maximum electron density height is 0.3~0.4 and 0.2~0.65 respectively, and the maximum difference between them reaches to 0.3. Comparatively, the latter coincides with the reality better, and it reduces the systematic error in the geodetic height direction by 0.05~0.3m. With the comparison to the standard point positioning based on ionosphere free combination of the dual-frequency code measurements, the method could eliminate the systematic error in geodetic height induced by the first order of ionospheric delay. And the method could adapt to the LEO altitudes of about 200~ 600km, but it's useless at the altitudes more than 700km.
- single-frequency GPS receiver /
- the method of ionospheric scale factor /
- standard point positioning /
- F2 region maximum electron density height

HTML全文

参考文献(10)

[1]	Montenbruck O,Gill E.Ionospheric correction for GPS tracking of LEO satellites[J].The Journal of Navigation,2002,55(2):293-304
[2]	郑磊,李征航,刘万科.用星载单频GPS数据实时定轨的电离层延迟改正[J].大地测量学与地球动力学,2010,30(3):118-121 Zheng Lei,Li Zhenghang,Liu Wanke.Correction of ionospheric delay for real-time orbit determination by using on-board single-frequency GPS data[J].Journal of Geodesy and Geomatics,2010,30(3):118-121(in Chinese)
[3]	Chapman S.The absorption and dissociative or ionizing effect of monochromatic radiation in an atmosphere on a rotating earth[J].Proc Phys Soc,1931,43(1):483-501
[4]	Bilitza D,Reinisch B W.International reference ionosphere 2007:improvements and new parameters[J].J Adv Space Res,2008,42(4):599-609
[5]	李征航,丁文武,李昭.GPS广播星历的轨道误差分析[J].大地测量与地球动力学,2008,28(2):50-54 Li Zhenghang,Ding Wenwu,Li Zhao.Error analysis of orbit determinated by GPS broadcast ephemeris[J].Journal of Geodesy and Geomatcis,2008,28(2):50-54(in Chinese)
[6]	Schaer S.Mapping and predicting the earth-s ionosphere using the global positioning system .Bern:Astronomical Institute,University of Bern,1999
[7]	Montenbruck O.Kinematic GPS positioning of LEO satellites using ionospheric-free single frequency measurements[J].Aerospace Science and Technology,2003,7(5):396-405
[8]	Kuang D,Bar-Sever Y,Bertiger W,et al.Precise orbit determination for CHAMP using GPS data from BlackJack receiver//Proceedings of the 2001 ION National Technical Meeting.Long Beach,CA,USA: ,2001:762-770
[9]	李征航,黄劲松.GPS测量与数据处理[M].武汉:武汉大学出版社,2005 Li Zhenghang,Huang Jinsong.GPS surveying and data processing[M].Wuhan:Wuhan University Press,2005(in Chinese)
[10]	王甫红,刘基余.星载GPS伪距测量数据质量分析[J].测绘科学技术学报,2007,24(2):97-99 Wang Fuhong,Liu Jiyu.Data quality analysis of space-borne GPS code measurements[J].Journal of Zhengzhou Institute of Surveying and Mapping,2007,24(2):97-99(in Chinese)