Analysis and Test of Correction to Vertical Velocity Measured by GPS Mobile Observation with Continuous Observation

ZHAN Wei; LI Fei; ZHU Shuang; ZHANG Jie

doi:10.13203/j.whugis20140251

Volume 41 Issue 7

Jul. 2016

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Geomatics and Information Science of Wuhan University > 2016 > 41(7): 963-968. > DOI: 10.13203/j.whugis20140251

ZHAN Wei, LI Fei, ZHU Shuang, ZHANG Jie. Analysis and Test of Correction to Vertical Velocity Measured by GPS Mobile Observation with Continuous Observation[J]. Geomatics and Information Science of Wuhan University, 2016, 41(7): 963-968. DOI: 10.13203/j.whugis20140251

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Analysis and Test of Correction to Vertical Velocity Measured by GPS Mobile Observation with Continuous Observation

ZHAN Wei^{1, 2,},
LI Fei^{1, 3},
ZHU Shuang²,
ZHANG Jie¹

1.
State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
2.
First Crust Monitoring and Application Center, China Earthquake Administration, Tianjin 300180, China
3.
Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China

Funds:

The Special Fund for China Earthquake Research Project No.201308009

the National Natural Science Foundation of China No.41474002

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Received Date: May 28, 2014
Published Date: July 04, 2016

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Abstract

Abstract

At present, the vertical velocities measured by GPS mobile observations have relatively low precision, which is due to the significant effect of seasonal motion and which cannot be overcome effectively given the insufficient data. A method to correct the results of mobile observations by using the information from GPS continuous observation in the same area is given in this study. Firstly, amplitudes of annual motion in GPS continuous stations were calculated. The amplitudes were used to obtain the amplitudes in mobile stations by using spatial interpolation method. With the results above, the vertical time-series of mobile GPS could be corrected to weaken the annual motion effect, so the vertical velocity results were acquired with improved precision. Two tests based on the continuous (from 2010 to 2013) and mobile observation (from 2011 to 2013) from tectonic and environmental observation network (hereinafter referred to as TEONET) in Yunnan area are proposed to prove its reliability. The results show that, in the area with a consistent spatial motion with an annual period, the method can correct the results of vertical velocity measured by GPS mobile observation effectively and improve the precision of velocity results.
- GPS,
- mobile observation,
- vertical velocity,
- correction,
- motion with an annual period

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References

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Analysis and Test of Correction to Vertical Velocity Measured by GPS Mobile Observation with Continuous Observation

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