摘要
针对大型结构件全局测量中多测站测量统一坐标系时的误差积累问题,该文以徕卡TM30全站仪测量系统作为测量手段,模拟实施测量方案获取点位坐标信息。基于七参数转换模型,利用Matlab编程,比较分析了作为初步转换法的四元数法、奇异值分解法和罗德里格矩阵法,对比其进行初步转换的精度差异,从而优选坐标转换方法。在初步转换的基础上,分别基于原始观测值和公共点坐标观测值进行整体平差解算,编程实现了全局测量中各公共点误差及各站坐标转换总误差的计算与分析。最后,对两种整体平差方法的优缺点进行了讨论分析,指出在实际工程中可综合应用两类整体平差方法的技术优势,以最大限度地减少误差积累,提高整体测量精度。
Aiming at the problem of error accumulation when multiple stations measure unifies coordinate systems in global measurement of large-scale structural parts,an experiment was carried out with the Leica TM30 total station system to simulate the implementation of the measurement scheme to obtain the point coordinate information in this paper.Furthermore,based on the seven-parameter transformation model,the quaternion method,the singular value decomposition method and the Rodrigue'matrix method as the preliminary conversion method were compared and analyzed by Matlab programming.And the difference in accuracy of the preliminary conversion was compared,thereby the coordinate conversion method was optimized.On the basis of the preliminary conversion,the overall adjustment calculation was performed based on the original observation value and the common point coordinate observation value respectively.The calculation and analysis of the common point error and the total coordinate error of each station in the global measurement were realized by programming.Finally,the advantages and disadvantages of the two overall adjustment methods were discussed and analyzed.It was pointed out that the technical advantages of the two types of overall adjustment methods could be comprehensively applied in practical engineering to minimize the error accumulation.Consequently,the measurement accuracy could be totally improved.
作者
吕栋
刘尚国
范春艳
毕善勇
LüDong;LIU Shangguo;FAN Chunyan;BI Shanyong(College of Geomatics,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;Shandong Provincial Key Laboratory of Geomatics and Digital Technology,Qingdao,Shandong 266590,China)
出处
《测绘科学》
CSCD
北大核心
2018年第12期137-144,共8页
Science of Surveying and Mapping
关键词
全局测量空间
整体平差
转站精度
MATLAB编程
精度控制
global measurement space
overall adjustment
coordinate transforming accuracy
Mat-lab programming
accuracy control