Influence of Ionosphere Delay on Single Frequency GPS Point and its Correction Method

ZHANG Chao; DAI Wujiao; SHI Qiang; ZENG Fanhe; KUANG Cuilin

doi:10.13203/j.whugis20150546

Volume 43 Issue 3

Mar. 2018

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Geomatics and Information Science of Wuhan University > 2018 > 43(3): 471-477. > DOI: 10.13203/j.whugis20150546

ZHANG Chao, DAI Wujiao, SHI Qiang, ZENG Fanhe, KUANG Cuilin. Influence of Ionosphere Delay on Single Frequency GPS Point and its Correction Method[J]. Geomatics and Information Science of Wuhan University, 2018, 43(3): 471-477. DOI: 10.13203/j.whugis20150546

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Influence of Ionosphere Delay on Single Frequency GPS Point and its Correction Method

ZHANG Chao^{1, 2,},
DAI Wujiao^{1, 2, ,},
SHI Qiang^{1, 2},
ZENG Fanhe^{1, 2},
KUANG Cuilin^{1, 2}

1.
School of Geoscience and Info-Physics, Central South University, Changsha 410083, China
2.
Key Laboratory of Precise Engineering of Surveying & Deformation Disaster Monitoring of Hunan Province, Changsha 410083, China

Funds:

The National Program on Key Basic Research of China (973 Program) 2013CB733303

the Postgraduate Independent Exploration Innovation Foundation Program of Central South University 2014zzts258

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Author Bio:
ZHANG Chao, master, specializes in GNSS data processing and software development. E-mail: zhangchaocsu@163.com
Corresponding author:
DAI Wujiao, PhD, professor. E-mail: wjdai@csu.edu.cn
Received Date: February 28, 2016
Published Date: March 04, 2018

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Abstract

Abstract

Ionosphere delay is the dominant error source of single frequency GPS ground deformation monitoring point coordinate precision, how to reduce the error source influence is the key point to enhance the precision of single and dual frequency mixed ground deformation monitoring system. Based on the data of Guangzhou Nansha single and dual frequency mixed GPS ground deformation monitoring network, analysis indicates that ionosphere delay influence is still large, even though the baseline length is short in low latitude region. The impact of ionosphere delay aggravates as baseline length increases, and the rule of seasonal change is quite obvious:significant in February, March, August and September. Dual frequency data is used to correct the ionosphere delay error in observation value domain, as a result, the precision is improved by 57%, indicating that the effect of observation domain correction is obvious.
- single frequency GPS,
- ground deformation monitoring,
- ionosphere delay,
- single and dual frequency mixed

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References (16)

References

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