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DOI | 10.1029/2020GL087161 |
Strong-Motion Seismogeodesy by Deeply Coupling GNSS Receivers with Inertial Measurement Units | |
Geng, Jianghui; Wen, Qiang; Zhang, Tisheng; Li, Chenghong | |
2020-04-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Global navigation satellite system (GNSS) displacements at near-source stations can be biased in both amplitude and phase due to fierce earthquake strike. We propose to inject inertial measurement unit (IMU)-recorded ground motions into GNSS receivers to compensate their phase-lock loops (PLLs) for seismic motion stress, aiming at keeping steady carrier-phase tracking. We use a shake table to replay an acceleration record (0.5-2.0 g) from the 2008 Mw7.9 Wenchuan earthquake to test this IMU-augmented PLL: It achieves a 1.9-mm amplitude error (RMS) and an 8.0-ms phase lag against the shake table's recordings, while the conventional PLL languishes to 6.0 mm and 56.5 ms, respectively. Moreover, the IMU-augmented PLL enables a six-degree-of-freedom integration among the GNSS and IMU data, where the displacement amplitude error and phase lag decline further to 0.9 mm and 3.5 ms, respectively. We believe that the IMU-augmented GNSS receivers are ideal strong-motion seismograph to capture trustworthy broadband displacements in the near fields. |
英文关键词 | Seismogeodesy High-rate GNSS Strong-motion seismology Phase-lock loop Six-degree-of-freedom |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000530332600026 |
WOS关键词 | HIGH-RATE GPS ; ACCELEROMETERS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279872 |
专题 | 气候变化 |
作者单位 | Wuhan Univ, GNSS Res Ctr, Wuhan, Peoples R China |
推荐引用方式 GB/T 7714 | Geng, Jianghui,Wen, Qiang,Zhang, Tisheng,et al. Strong-Motion Seismogeodesy by Deeply Coupling GNSS Receivers with Inertial Measurement Units[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(8). |
APA | Geng, Jianghui,Wen, Qiang,Zhang, Tisheng,&Li, Chenghong.(2020).Strong-Motion Seismogeodesy by Deeply Coupling GNSS Receivers with Inertial Measurement Units.GEOPHYSICAL RESEARCH LETTERS,47(8). |
MLA | Geng, Jianghui,et al."Strong-Motion Seismogeodesy by Deeply Coupling GNSS Receivers with Inertial Measurement Units".GEOPHYSICAL RESEARCH LETTERS 47.8(2020). |
条目包含的文件 | 条目无相关文件。 |
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