TY  - JOUR
A1  - Tu, Rui
A1  - Wang, L.
A1  - Liu, Z.
T1  - Real time monitoring ground motion using GPS with real time corrections
T2  - Survey Review
N2  - The high rate GPS velocity determination technology which is based on the broadcast ephemeris and epoch differenced model can retrieve displacement of ground motion with the precision of a few centimetres to decimetres in real time. Moreover, the precision of the recovered displacement can be improved if the un-modelled errors such as broadcast ephemeris residuals, atmospheric residuals, multipath effects and high frequency noise are tackled more accurately. In this paper, we propose a method to improve the precision of the recovered displacement by appropriately making use of reference station corrections. For the reference stations, the coordinates are highly constrained to extract the error corrections that are to be broadcast via a communication link to the rover. After correcting the rover’s observations, some errors such as ephemeris residuals and atmospheric residuals are effectively eliminated or at least reduced. This improves the accuracy of the observations and thus enhances the reliability of the velocity estimation. The displacement can be recovered by integrating the estimated velocity after de-trending using a linear trend that is caused by the un-corrected residuals. The series of validation results in the experiment have shown that the displacement of the simulated motion can be real time recovered with a precision of 1–2 cm, and is thus applicable for real time monitoring of the ground motion.
KW  - Real time
KW  - High rate GPS
KW  - Strong motion
KW  - Reference station
KW  - Rover station
Y1  - 2016
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/45586
SN  - 0039-6265
SN  - 1752-2706
VL  - 48
SP  - 79
EP  - 85
PB  - Wiley
CY  - Abingdon
ER  -