基于CIT技术的广域增强系统电离层延迟修正算法

欧明; 甄卫民; 於晓; 刘裔文; 徐继生

doi:10.11728/cjss2015.05.541

基于CIT技术的广域增强系统电离层延迟修正算法

doi: 10.11728/cjss2015.05.541

欧明^1,2, ,,
甄卫民²,
於晓^1,2,
刘裔文²,
徐继生¹

1.
武汉大学电子信息学院武汉 430079
2.
中国电波传播研究所青岛 266107

基金项目: 国家国际科技合作专项项目资助(2011DFA-22270, 2014DFR-21280)

详细信息

通讯作者:
欧明,E-mail:ohm1122@163.com

中图分类号: P323
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- 被引次数: 0
出版历程
- 收稿日期: 2014-09-26
- 修回日期: 2015-03-08
- 刊出日期: 2015-09-15

Cit-Based Correction Algorithm For The Ionospheric Delay In Wide Area Augmentation System

Ou Ming^{1,2
, ,},
Zhen Weimin²,
Yu Xiao^1,2,
Liu Yiwen²,
Xu Jisheng¹

1.
School of Electronic Information, Wuhan University, Wuhan 430079

摘要

摘要: 提出了一种基于电离层层析成像(CIT)技术的广域增强系统(WAAS)电离层延迟修正算法. 该算法利用模式基函数与截断奇异值分解正则化组合的方式, 实现WAAS单频用户的电离层延迟误差修正. 基于中国区域23个广域基准站和10个用户站的仿真结果分析表明, 传统的网格算法和基于CIT技术的电离层延迟修正算法的电离层延迟修正精度与太阳活动、昼夜变化及地磁纬度之间均存在明显的相关性. 基于CIT技术的电离层延迟修正算法精度优于网格算法, CIT算法的平均误差与标准差相比网格算法均有较大幅度的下降.
- 电离层延迟修正 /
- 广域增强系统 /
- 电离层层析成像 /
- 网格算法
Abstract: Ionospheric delay is one of the most important error sources in satellite navigation and positioning, many methods were adopted to mitigate the ionospheric delay for high precision navigation applications, such as local area differential GPS, wide area differential GPS, wide area augmentation differential GPS and Wide Area Augmentation System (WAAS). A new algorithm based on Computerized Ionospheric Tomography (CIT) for ionospheric delay correction in WAAS was proposed in this paper. The error of ionospheric delay can be corrected by the orthogonal combination of model-based function and Truncated Singular Value Decomposition (TSVD) for single frequency user in WAAS. The simulation results of 23 wide-area reference stations and 10 user stations in China show that the precision of ionospheric delay correction based on traditional grid-based algorithm and CIT-based algorithm have evident correlation with solar activities, local time and magnetic latitude as well. However, the performance of CIT-based algorithm is much better than that of grid-based algorithm. Both the mean error and standard deviation of CIT-based algorithm are far less than grid-based algorithm.
- Ionospheric delay /
- WAAS /
- Computerized ionospheric tomography /
- Grid-based algorithm

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参考文献(20)

[1]	Zhen Weimin, Cao Chong. Ionospheric limitation of GPS wide area argumentation system[J]. Radiow. Ant., 1997, 17(1):6-13. In Chinese (甄卫民, 曹冲. GPS广域增强系统的电离层限制[J]. 电波与天线, 1997, 17(1):6-13)
[2]	Sun Hua, Niu Lipi. The grid-based algorithms for ionospheric correction[J]. J. Proj. Rock. Miss. Guid., 2001, 21(1):63-67. In Chinese (孙桦, 牛力丕. WAAS电离层延迟误差校正的网格算法[J]. 弹箭与制导学报, 2001, 21(1):63-67)
[3]	Klobuchar J A. Ionospheric time delay algorithm for single-frequency GPS users[J]. IEEE Trans. Aeros. Elec. Syst., 1987, 23(3):332-338
[4]	RTCA Special Committee 159 Working Group 2, Minimum Operational Performance Standards for Global Positioning System/Wide Area Augmentation System Airborne Equipment[R]. RTCA Document Number DO-229A, 1998
[5]	Wang Yongcheng, Huang Jianyu, Zhou Qihuan. Grid algorithms of ionospheric delay in a GPS wide-area augmentation system[J]. J. Inst. Comm., 1998, 19(12):38-41. In Chinese (王永澄, 黄建宇, 周其焕. GPS广域增强系统的电离层延迟网格校正算法[J]. 通信学报, 1998, 19(12):38-41)
[6]	Wang Gang, Wei Ziqing. A Method and results of setting up grid ionospheric delay model[J]. Bull. Surv. Mapp., 2000, 9(1):1-2. In Chinese (王刚, 魏子卿. 格网电离层延迟模型的建立方法与试算结果[J]. 测绘通报, 2000, 9(1):1-2)
[7]	Yuan Yunbin, Ou Jikun. The first study of establishing China grid ionospheric grid[C]//Proceeding of 14th International Technical Meeting of the Satellite Division of the Institute of Navigation. Salt Lake City, UT: ION, 2001:2516-2524
[8]	Huang Zhi, Yuan Hong, Wan Weixing. The test of FAA WAAS ionospheric grid corrections algorithm[J]. GNSS World China, 2003, 6(2):115-118. In Chinese (黄智, 袁洪, 万卫星. WAAS电离层网格改正算法在中国地区部分站点的试算精度[J]. 全球定位系统, 2003, 6(2):115-118)
[9]	Huang Zhi, Yuan Hong. Performance analysis of ionospheric grid model during storm for wide area augmenta-tion system[J]. Chin. J. Radio Sci., 2006, 21(6):853-857. In Chinese (黄智, 袁洪. 磁暴期间增强系统电离层网格模型性能分析[J]. 电波科学学报, 2006, 21(6):853-857)
[10]	Wang Yiju, Yuan Hong, Wan Weixing, et al. An improved grid-based correction algorithms for the ionospheric delay in WAAS[J]. Chin. J. Space Sci., 2002, 22(2):129-135. In Chinese (王一举, 袁洪, 万卫星, 等. 改进的WAAS电离层时延网格修正算法[J]. 空间科学学报, 2002, 22(2):129-135)
[11]	Wang Yiju, Yuan Hong, Wan Weixing. An improved grid-based correction algorithms for sparsely observation station region in WAAS[J]. Chin. J. Space Sci., 2003, 23(2):97-101. In Chinese (王一举, 袁洪, 万卫星. 观测站稀疏地区的WAAS电离层时延网格修正算法[J]. 空间科学学报, 2003, 23(2):97-101)
[12]	Jin Fengqiu, HuanZhigan, Shao Bo. Estimation method of ionospheric delay of IGP based on spatial variability[J]. J. Telem., Track. Comm., 2010, 31(4):6-10. In Chinese (金凤秋, 黄智刚, 邵搏. 基于空间变异特性的格网电离层延迟估计方法[J]. 遥测遥控, 2010, 31(4):6-10)
[13]	Austen J R, Franke S J, Liu C H. Ionospheric imaging using computerized tomography[J]. Radio Sci., 1988, 23(3):299-307
[14]	Hansen A. Tomographic Estimation of the Ionospheric linebreak Using Terrestrial GPS Sensors[D]. Stanford C A: Stanford University, 2002
[15]	Wen Debao. The research progress of computerized ionospheric tomography technique[J]. Bull. Nat. Sci. Fund. China, 2010, 01:17-20. In Chinese (闻德保. 电离层层析成像技术的研究进展[J]. 中国科学基金, 2010, 1:17-20)
[16]	Yu Xiao, Ou Ming, Liu Dun, et al. Study of compu-terized ionospheric tomography under ionospheric storm conditions[J]. Chin. J. Space Sci., 2010, 30(3):221-227. In Chinese (於晓, 欧明, 刘钝, 等. 地磁暴期间中国中低纬电离层的CIT研究[J]. 空间科学学报, 2010, 30(3):221-227)
[17]	Sun Hua, Niu Lipi. The grid-based algorithms of users for ionospheric correction[J]. J. Astron. Metrol. Meas., 2001, 21(4):7-11. In Chinese (孙桦, 牛力丕. WAAS电离层延迟网格校正中的用户算法研究[J]. 宇航计测技术, 2001, 21(4):7-11)
[18]	Ou Ming, Zhen Weimin, Xu Jisheng, et al. A compu-terized ionospheric tomography algorithm based on TSVD regularization[J]. Chin. J. Radio Sci., 2014, 29(2):345-352. In Chinese (欧明, 甄卫民, 徐继生, 等. 一种基于截断奇异值分解正则化的电离层层析成像算法[J]. 电波科学学报, 2014, 29(2):345-352)
[19]	He Yujing, Yang Li, Li Ping, it et al. Analysis of reference stations' position and quantity in China WAAS[J]. Eng. Surv. Mapp., 2006, 15(3):70-73. In Chinese (何玉晶, 杨力, 李平, 等. 我国广域增强系统的基准站布局及数量分析[J]. 测绘工程, 2006, 15(3):70-73)
[20]	Nava B, Coisson P, Radicella S M. A new version of the Ne Quick ionosphere electron density model[J]. J. Atmos. Sol. Terr. Phys., 2008, 70(15):1856-1862