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Tightly integrated processing of high-rate GPS and accelerometer observations by real-time estimation of transient baseline shifts

  • The complementary advantages of high-rate Global Positioning System (GPS) and accelerometer observations for measuring seismic ground motion have been recognised in previous research. Here we propose an approach of tight integration of GPS and accelerometer measurements. The baseline shifts of the accelerometer are introduced as unknown parameters and estimated by a random walk process in the Precise Point Positioning (PPP) solution. To demonstrate the performance of the new strategy, we carried out several experiments using collocated GPS and accelerometer. The experimental results show that the baseline shifts of the accelerometer are automatically corrected, and high precision coseismic information of strong ground motion can be obtained in real-time. Additionally, the convergence and precision of the PPP is improved by the combined solution.

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Author details:Rui TuGND, Kejie ChenGND
DOI:https://doi.org/10.1017/S0373463314000150
ISSN:0373-4633
ISSN:1469-7785
Title of parent work (English):The journal of navigation
Publisher:Cambridge Univ. Press
Place of publishing:New York
Publication type:Article
Language:English
Year of first publication:2014
Publication year:2014
Release date:2017/03/27
Tag:Accelerometer records; Baseline shift; High-rate GPS; Precise Point Positioning; Tight integration
Volume:67
Issue:5
Number of pages:12
First page:869
Last Page:880
Funding institution:China Scholarship Council for their Ph. D. study in Germany
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Geowissenschaften
Peer review:Referiert
Institution name at the time of the publication:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften
External remark:Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 598
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