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Application of GPS Dual Frequencies Phase-Smoothed Pseudo-Range Data in Accuracy Evaluation of Satellite Clock Error of Broadcast Ephemeris(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2008年第02期
Page:
209-213
Research Field:
地球信息科学
Publishing date:

Info

Title:
Application of GPS Dual Frequencies Phase-Smoothed Pseudo-Range Data in Accuracy Evaluation of Satellite Clock Error of Broadcast Ephemeris
Author(s):
LU Xiao-feng1; JIA Xiao-lin2; YANG Zhi-qiang1
1. School o f Geological Engineering and Surveying, Changan University, Xian 710054, Shaanxi, China; 2. Xian Research Institute o f Surveying and Mapping, Xian 710054, Shaanxi, China
Keywords:
Hatch-type filter;  carrier phase smoothed pseudo-range;  iono-free combination;  broadcast ephemeris;  satellite clock bias;  accuracy evaluation
PACS:
P228
DOI:
-
Abstract:
The carrier smoothed pseudo-range is briefly discussed, and a weighting method is developed for Hatch- type filter. Based on this modified Hatch-type filter and precise ephemeris,the accuracy evaluation of satellite clock bias of broadcast ephemeris using GPS dual frequencies phase-smoothed pseudo-range is researched. By comparison and anaysis,the following facts are drawn: it improves the precision of pseudo-range using phase smoothing pseudo-range,and improves the precision of satellite clock bias when the clock bias is calculated by using pseudo-ranges data; the precision of satellite clock bias is better than 1 ns(1σ),when the clock bias is calculated by using GPS dual frequencies phase-smoothed pseudo-range data; there is no systematic error between this research and IGSs clock bias.

References:

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[2] 范士杰 , 郭际明 , 彭秀英 .GPS 双频相位平滑伪距及其单点定 位的精度研究[J] .测绘工程 , 2005 , 14(4):39-42 .
[3] H atch R.T he Synergism of GPS Code an d Carrier Measurement s[C] ∥Proceedings of the Thi rd In ternati on al Geodet ic Symp osium on Sat el li t e Doppler Positi oning .New Mexic USA , 1982 .
[4] 周忠 谟 , 易杰 军 , 周 琪 , 等 .GPS 测量 原理 与应用[M] .北 京 :测绘出版社 , 1999 .
[5] 魏子卿 , 葛茂荣 .GPS 相对定 位的数学 模型[M] .北京 :测绘 出版社 , 1998 .

Memo

Memo:
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Last Update: 2008-06-20