全站仪构建全局测量空间的转站精度仿真分析

Simulation analgsis on the coordinate transformation accuracy of the total station constructing global measurement space

针对大尺寸工业测量范围大、精度要求高,通常需要进行转站测量来实现对全局测量空间的控制,而转站测量中的转站精度也是影响整体测量精度的关键。该文利用徕卡TM30全站仪测量系统作为测量手段,获取公共点坐标信息,采用Matlab软件编程,构建了转站精度分布模型,并对转站精度受公共点测量误差变化及待测点分布的影响进行了仿真分析。结果表明,在实际工程测量中构建全局测量空间时,通过对转站精度进行仿真分析,可实现对待测点布设方案的优化设计,提高整体的测量精度。

Due to the wide measuring range and the high require for the precision of the large-scale industrial measurement,it is usually in need to perform coordinate transformation in the global measurement space.Therefore,the coordinate transformation accuracy is the key of the total measuring accuracy.For that reason,an experiment was carried out with the Leica TM30 total station system to acquire the coordinate information of the common points.Furthermore,the distribution model of the coordinate transformation accuracy was constructed by Matlab programming.And It is also analyzed the the impact of the common points measuring error and the distribution of the observation points on the transformation accuracy.The results presented that the distribution of the observation points can be well designed through the analysis of the transformation accuracy before the practical engineering measurement.Consequently,the measurement accuracycan be totally improved.