GNSS carrier phase common-view precision time transfer using the ionospheric-weighted single-differenced model

被引：0

作者：

Jiang, Jintao ^{[1
]}

Chai, Yanju ^{[2
]}

Hou, Pengyu ^{[3
]}

Zhang, Baocheng ^{[4
]}

机构：

[1] Chinese Acad Sci, Innovat Acad Precis Measurement Sci & Technol, State Key Lab Geodesy & Earths Dynam, Wuhan, Peoples R China

[2] Chinese Acad Sci, State Key Lab Geodesy & Earths Dynam, Innovat Acad Precis Measurement Sci & Technol, Wuhan, Peoples R China

[3] Chinese Acad Sci, Innovat Acad Precis Measurement Sci & Technol, Wuhan, Peoples R China

[4] Chinese Acad Sci, Inst Geodesy & Geophys, Wuhan, Peoples R China

来源：

JOURNAL OF SPATIAL SCIENCE | 2025年 / 70卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Time transfer; ionospheric-weighted; single-differenced; integer ambiguity resolution; GPS; PPP;

D O I：

10.1080/14498596.2024.2353154

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

High-precision global navigation satellite system (GNSS) time transfer depends on the carrier phase observations, and ionospheric delay affects rapid integer ambiguity resolution. Therefore, this work applies the ionospheric-weighted single-differenced model. Experimental results indicate that for a time-link of 67.9 km, the time transfer accuracy of different single-system is better than 0.03 ns. Compared with single-system, multi-system demonstrates 8% to 14% improvement in accuracy and improvement of no more than 31% in frequency stability. Additionally, compared with the case without ionospheric constraint, imposing ionospheric constraints can improve performance of time transfer, but the gain decreases as the time-link length increases.

引用

页码：45 / 64

页数：20

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