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journal article Open Access Apr 14, 2017

Integrating GPS with GLONASS for high‐rate seismogeodesy

Jianghui Geng ORCID Peng Jiang ORCID Jingnan Liu ORCID
Geophysical Research Letters Vol. 44 No. 7 pp. 3139-3146 · American Geophysical Union (AGU)
View at Publisher Save 10.1002/2017gl072808
Abstract
AbstractHigh‐rate GPS is a precious seismogeodetic tool to capture coseismic displacements unambiguously and usually improved by sidereal filtering to mitigate multipath effects dominating the periods of tens of seconds to minutes. We further introduced GLONASS (Globalnaya navigatsionnaya sputnikovaya sistema) data into high‐rate GPS to deliver over 2000 24 h displacements at 99 stations in Europe. We find that the major displacement errors induced by orbits and atmosphere on the low‐frequency band that are not characterized by sidereal repeatabilities can be amplified markedly by up to 40% after GPS sidereal filtering. In contrast, integration with GLONASS can reduce the noise of high‐rate GPS significantly and near uniformly over the entire frequency band, especially for the north components by up to 40%, suggesting that this integration is able to mitigate more errors than only multipath within high‐rate GPS. Integrating GPS with GLONASS outperforms GPS sidereal filtering substantially in ameliorating displacement noise by up to 60% over a wide frequency band (e.g., 2 s–0.5 days) except a minor portion between 100 and 1000 s. High‐rate multi‐GNSS (Global Navigation Satellite System) can be enhanced further by sidereal filtering, which should however be carefully implemented to avoid adverse complications of the noise spectrum of displacements.
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References
31
[4]
Bilich A. L.(2006) Improving the precision and accuracy of geodetic GPS: Application to multipath and seismology PhD thesis Univ. of Colorado Boulder Colo.
[12]
Ester M. H.‐P.Kriegel J.Sander andX.Xu(1996) A density‐based algorithm for discovering clusters in large spatial databases with noise. paper presented at 2nd International Conference on Knowledge Discovery and Data Mining pp. 226–231 AAAI Press Portland Oregon 2–4 Aug.
Metrics
67
Citations
31
References
Details
Published
Apr 14, 2017
Vol/Issue
44(7)
Pages
3139-3146
License
View
Authors
J
Jianghui Geng

GNSS Research Center Wuhan University Wuhan China

P
Peng Jiang

GNSS Research Center Wuhan University Wuhan China

J
Jingnan Liu

GNSS Research Center Wuhan University Wuhan China

Funding
National Natural Science Foundation of China Award: 41231174
Cite This Article
Jianghui Geng, Peng Jiang, Jingnan Liu (2017). Integrating GPS with GLONASS for high‐rate seismogeodesy. Geophysical Research Letters, 44(7), 3139-3146. https://doi.org/10.1002/2017gl072808
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