Low cost DGPS wireless network

This article depicts the development and test of a low cost wireless sensor network intended for use in severe environmental conditions. The test site is a serac located at 4100m above a populated area. It was needed to put in place a monitoring system able to trace displacement continuously and in all weather conditions. To achieve this goal starting from a professional but cheap single frequency GNSS module we developed the needed electronics to control it, log the data and transmit them over a long distance. The final board is working at 2.4 GHz and the network protocol is based on a proprietary implementation of a listen before talk approach. The high DGPS precision is obtained by using local GNSS permanent stations.