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Abstract Sliding perturbation remote monitoring(SPRM) system has its unique advantages on the monitoring cost and effect，which had successfully forecasted landslide three times in the national scope. According to the principle and construction of system，combined with the early days application feedback，the existing defects and shortcomings were put forward，which were mainly concentrated on three aspects，such as，communications technology，data collection and transmission technology，forecast method and early warning mode of landslide disasters. The system was improved and finally upgraded to SPRM–III system，through using Beidou satellite communication system to replace the global system of mobile(GSM) network communication system，using ZigBee communication mode and wireless sensor network technology to develop and apply planar data collection and transmission technology，establishing standard forecast method and early warning mode of landslide disasters. After the completion of the improvement，the system began its engineering application. The application effect shows that the intrinsic problems and shortages have been overcome，the system working is stable and effective；and the expected goals have been achieved.
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Received: 18 May 2011
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2011, Vol. 30 
