| A new approach of single epoch GPS posi- tioning for landslide monitoring |
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| 作者姓名： | 刘根友 朱耀仲 周蓉生 |
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| 作者单位： | Institute of Geodesy and Geophysics，Chinese Academy of Sciences，Wuhan 430077，China，Institute of Geodesy and Geophysics，Chinese Academy of Sciences，Wuhan 430077，China，Chengdu University of Technology，Chengdu 610059，China |
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| 基金项目： | Chinese Academy of Sciences，the National Natural Science Foundation of China，Project of Science and Technology Bureau of Sichuan Province |
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| 摘 要： | Introduction China is a country with many landslides and debris flows. These disasters bring out a large amount of losses of life and property. It is significant to predict landslide incident by monitoring the deformations of these landslides. At past, triangulation and trilateration are traditional tools, but it is very difficult for them to realize real-time monitoring, and it is more dangerous for obser- vation workers when the deformation becomes larger. Because of many advantages such as…
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| 收稿时间： | 8 May 2004 |
| 修稿时间： | 7 December 2004 |
A new approach of single epoch GPS positioning for landslide monitoring |
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| LIU Gen-you,ZHU Yao-zhong,ZHOU Rong-sheng.A new approach of single epoch GPS posi- tioning for landslide monitoring[J].Acta Seismologica Sinica(English Edition),2005,18(4):427-434. |
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| Authors: | LIU Gen-you ZHU Yao-zhong ZHOU Rong-sheng |
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| Institution: | 1. Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China
2. Chengdu University of Technology, Chengdu 610059, China |
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| Abstract: | When the deformation of landslide becomes larger, the conventional static GPS surveying cannot satisfy the real-time requirement in landslide monitoring. In this paper we present a new method for single epoch GPS positioning combining with the accuracy of approximate coordinates of monitored station in landslide monitoring. This algorithm does not consider troublesome cycle-slip problem of carrier phase, and integer ambiguities can be solved at a single epoch, so the centimeter level accurate coordinates can be calculated instantaneously. By means of filtering or smoothing, this method can be extended to detect millimeter level deformation and velocity. In order to test the new method, low-cost single frequency receivers have been used in a real landslide, which happened in Jiangxi Province, China. |
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| Keywords: | deformation monitoring landslide single epoch GPS positioning ambiguity resolution |
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