使用GPS对大坝进行姿态测量的研究

Research on algorithm of GPS attitude determination in dam

全球定位系统(GPS)在地质监测、建筑变形等领域已被广泛应用,在大坝精确实时监测及其水电设施主要地形观测上,GPS也已被证明是一种很有价值的工具。在分析了将GPS姿态测量技术用在大坝安全变形监测上的可能性的基础上,给出了姿态参数的直接算法和最小二乘估计算法,同时通过分析这2种算法对大坝进行监测的精度,并给出仿真图形进行对比。仿真结果表明,使用最小二乘算法可以得到更高精度的姿态解,可以用来监测大坝的变形。

Global position system （GPS） has been widely applied in geological observation and distortion. It has been proved that GPS is a valuable instrument used for the exact and real--time observation of the dam and the main landform observation of its hydroelectric facilities. Based on the analysis of the feasibility for supervising dam＇s security distortion, the direct method and least squares computation of attitude parameters were proposed. Moreover, through analyzing the observation precision to the dam by these two algorithms, the simulation graphics were given to make a comparison. The simulation result indicates that the least squares algorithm can provide high precision at titude and can be used in supervising dam＇ s security distortion.