High-rate GNSS multi-frequency uncombined PPP-AR for dynamic deformation monitoring

被引：5
作者：
Pan, Lin [1 ]
Xiong, Bowen [1 ]
Li, Xuanping [1 ,2 ]
Yu, Wenkun [1 ]
Dai, Wujiao [1 ]
机构：
[1] Cent South Univ, Sch Geosci & Infophys, Changsha 410083, Peoples R China
[2] Changsha Jinwei Informat Technol Co Ltd, Syst Design Dept, Changsha 410000, Peoples R China
来源：
ADVANCES IN SPACE RESEARCH | 2023年 / 72卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Precise point positioning; Multi-frequency and multi-system integration; Ambiguity resolution; High-rate vibration; Dynamic deformation monitoring; POINT POSITIONING PPP; FREQUENCY CLOCK BIAS; GPS; EARTHQUAKE; PERFORMANCE; RESOLUTION; PHASE; BDS-3;
D O I：
10.1016/j.asr.2023.08.056
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Precise point positioning (PPP) is an important alternative to real-time kinematic (RTK) positioning for deformation monitoring. Global Navigation Satellite System (GNSS) multi-frequency and multi-system integration can benefit PPP dynamic deformation monitoring due to increased measurement redundancy and facilitated ambiguity resolution (AR). This study investigates the performance of GNSS multi-frequency uncombined (UC) PPP-AR with GPS triple-frequency, BDS-3 triple-frequency, and Galileo five-frequency signals for monitoring high-rate vibrations based on 20-Hz observations from a shaking table. The GNSS multi-frequency UC fractional cycle bias (FCB) estimation method and PPP-AR method are developed. The results of vibration tests indicate that the displacement monitoring accuracy of GPS/BDS-3/Galileo multi-frequency PPP-AR solution is 5.3-8.4 mm. BDS-3 dual-frequency PPP-AR, BDS3 triple-frequency PPP-AR, and GPS/BDS-3/Galileo multi-frequency PPP-AR solutions improve the accuracy by 8%, 17%, and 46% over the BDS-3 dual-frequency float solutions, respectively. GNSS multi-frequency UC PPP-AR can accurately identify the vibration frequency and amplitude, but the PPP-derived displacement is nosier than that of RTK. (c) 2023 COSPAR. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：4350 / 4363
页数：14
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