Using GPS To Monitor The Building Deformation And The Construction Of System Model

Using the GPS satellite position system to monitor the building deformation,it isa kind of new monitor means, this text does some discuss with it, at the same time,does some research to the constitution of monitoring system model.In the beginning of this test, it summarize with the GPS's composing,orientation theory, the style of measurement and measurement error. The feasibility ofusing GPS to deformation monitoring is be demonstrated. At the same time, it bringforward some guiding operation to the actualiziation of deformation monitoring.Then introduce three contents, it contains: the data processing of GPSmeasurement, the detecting and eliminating of phase skip, the operation step of usingwavelet to get rid of noise and get actual value of deformation. Its result indicate thatthrough the decompound and reconstruction, it will be effectively get actual characterof deformation from measurement data sequence that is be strongly interferented.Then make model analysis and treatment to the actual measurement data ofdeformation monitoring. The model be used includes Grey System Model (GM) andBP Artifical Nerve Network model (BP ANN). Through modeling and analyzing withthe actual deformation monitoring data from DongJiang dam, it gets differentcharacter with those two models. Aim at the actual character of using GPS system todo monitoring. It can use Grey system model in the early time. And use the BPartifical nerve network model to forecast the deformation value in the later time. Thatis say it can construct a combinated monitoring model which includes Grey systemmodel and BP artifical nerve network model.At last, construct model with the actual deformation monitoring data ofGeHeYan dam in the flood season, and do analysis with it. It demonstrated that it canuse the GM-GP ANN combinated model, and it will achieve better resule in theanalysis of deformation and forecasting.