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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:Rui TuGND, Kejie ChenGND
Parent Title (English):The journal of navigation
Publisher:Cambridge Univ. Press
Place of publication:New York
Document Type:Article
Year of first Publication:2014
Year of Completion:2014
Release Date:2017/03/27
Tag:Accelerometer records; Baseline shift; High-rate GPS; Precise Point Positioning; Tight integration
First Page:869
Last Page:880
Funder:China Scholarship Council for their Ph. D. study in Germany
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Erd- und Umweltwissenschaften
Peer Review:Referiert
Notes extern:Zweitveröffentlichung in der Schriftenreihe Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe ; 598