Paper Info
Title
High-Rate GPS Seismology Using Real-Time Precise Point Positioning With Ambiguity Resolution
Abstract
With the availability of real-time high-rate GPS observations and precise satellite orbit and clock products, the interest in the real-time precise point positioning (PPP) technique has greatly increased to construct displacement waveforms and to invert for source parameters of earthquakes in real time. Furthermore, PPP ambiguity resolution approaches, developed in the recent years, overcome the accuracy limitation of the standard PPP float solution and achieve comparable accuracy with relative positioning. In this paper, we introduce the real-time PPP service system and the key techniques for real-time PPP ambiguity resolution. We assess the performance of the ambiguity-fixed PPP in real-time scenarios and confirm that positioning accuracy in terms of root mean square of 1.0-1.5 cm can be achieved in horizontal components. For the 2011 Tohoku-Oki (Japan) and the 2010 El Mayor-Cucapah (Mexico) earthquakes, the displacement waveforms estimated from ambiguity-fixed PPP and those provided by the accelerometer instrumentation are consistent in the dynamic component within few centimeters. The PPP fixed solution not only can improve the accuracy of coseismic displacements but also provides a reliable recovery of earthquake magnitude and of the fault slip distribution in real time.
Year
DOI
Venue
2014
10.1109/TGRS.2013.2295373
IEEE T. Geoscience and Remote Sensing
Keywords
Field
DocType
earthquake magnitude recovery,global positioning system,geophysical techniques,remote sensing,real time ppp service system,displacement waveforms,japan,real time high rate gps observations,seismology,fault slip inversion,precise point positioning (ppp) ambiguity resolution,mexico,earthquake source parameters,real time precise point positioning technique,high-rate gps,standard ppp float solution,earthquakes,high rate gps seismology,precise clock products,real time ppp ambiguity resolution,el mayor-cucapah earthquake,ad 2010,real-time ppp,ppp ambiguity resolution approaches,real time ppp technique,precise satellite orbit products,tohoku-oki earthquake,position measurement,coseismic displacement,gps seismology,accelerometer instrumentation,ad 2011,fault slip distribution,real time systems,satellites
Seismology,Magnitude (mathematics),Satellite,Accelerometer,Remote sensing,Ambiguity resolution,Global Positioning System,Root mean square,Geodesy,Precise Point Positioning,Mathematics,Instrumentation
Journal
Volume
Issue
ISSN
52
10
0196-2892
Citations 
PageRank 
References 
1
0.94
0
Authors
7
Name
Order
Citations
PageRank
Xingxing Li1147.48
Maorong Ge22919.02
Cuixian Lu3216.61
Yong Zhang4152.27
Rongjiang Wang542.69
Jens Wickert64427.67
Harald Schuh73520.68