Real-time Landslide Detection Svstem Using Precise Carrier Phase GPS

Hitoshi Kondo and M. Elizabeth Cannon

Abstract:	It is very important to monitor the mechanical be- haviour of an extensive area in geotechnical en- gneering such as high cut slopes, landslides and subsidences. It is very expensive to continuously measure many points to monitor the behaviour. Since GPS is available in all weather, day and night, and can monitor a large measurement net- work, it is very useful tool for measurering displace ment vectors over an extensive area. Becently, some applications of GPS to subsi- dence and landslide measurement have been stud- ied. A real-time system to measure the positons of up to 10 points and to detect displacement of these points, however, has not yet been developed. The authors have developed a system using pre- cise carrier phase GPS techniques to detect dis- placement for monitoring the mechanical behavior of an extensive area at the level of a few centime- ters. In this paper, the system concepts are de- scribed and results of the field experiments to prove the applicability of the system are given. Field tests show that displaements on the order of 2cm can be detected.
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	1877 - 1884
Cite this article:	Kondo, Hitoshi, Cannon, M. Elizabeth, "Real-time Landslide Detection Svstem Using Precise Carrier Phase GPS," Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995), Palm Springs, CA, September 1995, pp. 1877-1884.
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