Analysis of higher-order ionospheric effects on GNSS precise point positioning in the China area

Analysis of higher-order ionospheric effects on GNSS precise point positioning in the China area
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中国地区高阶电离层对GNSS精密单点定位的影响分析

DOI:
10.1080/00396265.2018.1478483
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发表时间:
2019-09
期刊:
影响因子:
1.6
通讯作者:
Changsheng Cai
Changsheng Cai
中科院分区:
地球科学4区
文献类型:
--
作者:
Yaozong Zhou;Cuilin Kuang;Changsheng Cai

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在高电离层活动的情况下,高阶电离层误差可能达到几毫米,这影响了一些高精度的应用,如地壳运动监测、地震灾害预测、板块运动监测和坐标框架维护。然而,考虑高阶电离层误差还不是区域全球导航卫星系统(GNSS)网络数据处理的共同战略。利用部分IGS站和部分CMONOC站的GNSS数据,研究了高阶电离层对中国地区精密单点定位的影响。使用Bernese GNSS软件计算了高阶电离层误差对PPP估计坐标的影响。数值结果表明,高阶电离层定位误差随着测站纬度的降低或电离层活动的增加而增大。此外,北向的定位误差大于东向和上行方向,中国南部的定位误差可能达到6 mm。
Higher-order ionospheric error may reach several millimetres in the case of high ionospheric activity, which affects some high-accuracy applications, such as crustal movement monitoring, earthquake disaster prediction, plate motion monitoring and coordinate frame maintenance. However, accounting for higher-order ionospheric error is not yet a common strategy for regional global navigation satellite system (GNSS) network data processing. This study investigates the higher-order ionospheric effects on precise point positioning (PPP) in the China area with GNSS data selected from some IGS stations and some CMONOC stations. The Bernese GNSS software was used to calculate the effects of higher-order ionospheric error on the PPP estimated coordinates. The numerical results show that higher-order ionospheric positioning errors become larger as the station latitude decreases or the ionospheric activity increases. In addition, the positioning errors in the north direction are larger than those in the east and up directions and may reach 6 mm in south China.
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