High-rate GNSS techniques for the detection of large seismic displacements

Author

Ning, T. ; Johansson, J.M. ; Scherneck, H-G. ; Jarlemark, P.O.J. ; Emardson, R.

Author_Institution

Dept. of Radio & Space Sci., Chalmers Univ. of Technol., Onsala, Sweden

Volume

5

fYear

2009

fDate

12-17 July 2009

Abstract

Measurement of co-seismic strong-motion displacements at sub-second temporal resolution is of great importance for earthquake studies. We have investigated the usage of high-rate sampled Global Navigation Satellite System (GNSS) data to measure seismic motion by implementing an industrial robot simulating the displacements close to an earthquake epicenter. The robot arm is tracked by GNSS signals. Two baselines-400 m and 60 km-from the robot to reference stations are used to process the observed GPS data. Both methods give similar (within 0.5 mm) Root Mean Square (RMS) differences between the estimated and the commanded coordinates. The RMS differences are 3.5 mm in the east component, 5.6 mm in the north component, and 8.1 mm in the vertical component.

Keywords

Global Positioning System; earthquakes; industrial robots; remote sensing; seismology; GPS data; Global Navigation Satellite System; coseismic strong-motion displacements; earthquake; high-rate GNSS technique; industrial robot; large seismic displacement detection; robot arm; root mean square differences; seismic motion; Displacement measurement; Earthquakes; Global Positioning System; Motion measurement; Robot kinematics; Root mean square; Satellite navigation systems; Seismic measurements; Service robots; Signal resolution; GNSS; GPS; Seismic strong motion;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009

Conference_Location

Cape Town

Print_ISBN

978-1-4244-3394-0

Electronic_ISBN

978-1-4244-3395-7

Type

conf

DOI

10.1109/IGARSS.2009.5417658

Filename

5417658