Based On The GPS Satellite Positioning Technology Of High Precision Deformation Monitoring System Design And Implementation

High precision deformation monitoring has two important aspects in practical andscientific. In practice, it mainly checks the stability of various engineering structures andgeological structures and finds problems in a timely manner, so as to take correspondingmeasures. In science, it includes a better understanding and grasping the principles ofdeformation control, verifying the feasibility of the relevant engineering design theory, andestablishing the theory and method of an accurate forecast and deformation. GPS satellitebased positioning technology has been widely used in various areas of production. It has highprecision, good continuity, all-weather and real-time characteristics. Moreover, it also can beunmanned monitoring in a bad environment. So it becomes the main means of monitoring.This paper based on GPS satellite positioning technology to design and realize ahigh-precision deformation monitoring system. It firstly introduced and simulated thetheoretical basis in paper, the mainly work is baseline solution based on Gamit, and useiterative Kalman predicting through the received data and value of baseline solution, andcompared with the actual data to achieve optimal estimate. Thus, it can obtains the amount ofmonitoring-point’s changing from the process of the relative position’s baseline solution, andmakes dynamic early warning and monitoring to the deformation values of monitoring points.Secondly the system functions design mainly contain two parts in this paper: rover andbase station. On the rover, it is made of EM9170IPC development board and GPS module,responsible for receiving the GPS data of the monitoring points, and use programminglanguage to obtain solver data and satellite information automatically, and send the receivingdata to the base station via wireless bridge. On the base station, it is made of ENC5146IPCand GPS module, in addition to collect GPS data, at the same time it is also responsible forbaseline solution jointing rover’s data and itself data. This is the core function of the system.Last it will send the solved data and other related information to the remote monitoring serverthrough the public network GPRS. The rover and base station functions are realized byVS2008, and in addition to design the corresponding database.Finally, this paper which is based on the practical application of the system in LanzhouYaoJie power tower to analyzes the obtained data, judgment the error can achieve therequirement of high-precision millimeter, and verifies the reliability and stability of thesystem in practical applications. It has a wide range of practical applications future.The innovation of this paper is based on open source Gamit solver as the prototype,through the model of Gamit solver improvement and the integrated use of iterative Kalmanfilter, we can design a type solution algorithm, then according to this theory algorithm design high-precision deformation monitoring system, and finally use this system to be applied inpractice.