基于USMN的大型操纵性水池基础轨道空间位置测量方法研究
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摘要
在进行大型工程测量时,单台、单站测量仪器通常不能完成全部的测量任务,需要使用多站或多台仪器在不同的位置实施测量。本文介绍了一种基于统一空间测量网络(Unified Spatial Metrology Network,USMN)的测量方法,该方法对多台多站的测量数据的处理,相比传统的拟合拼接法不会引入较大的累积误差。基于USMN的测量方法通过重新分配拟合要素的权重,来降低多次拼接引入的累积误差,提高多站测量方法的精度,为大型工程测量精度的提高提供了有效的方法。通过对两种方法的多站数据拼接并观测末站数据和首站数据的闭环性及拟合圆的径向跳动,显著地观察到本文介绍的方法闭环性更好,拟合的圆径向跳动更小,相较传统方法更加接近测量的真实情况。
This article introduces a measuring method based on Unified Spatial Metrology Network( USMN). In large-scale engineering measurement,one instrument in one position cannot fulfill the task. Moving instrument to different positions or more than one instrument is needed. Instead of accumulating error by Best-fit in traditional way,the USMN can reduce the cumulative error by redistributing the weights of fitting elements. Therefore it increases the accuracy of multi-station measurement method,and provides an effective means in large scale engineering measurement. By comparing and observing the close degree of end-to-end and changes in radial direction of two methods,the USMN has been found closer to real situation than the traditional one.
This article introduces a measuring method based on Unified Spatial Metrology Network( USMN). In large-scale engineering measurement,one instrument in one position cannot fulfill the task. Moving instrument to different positions or more than one instrument is needed. Instead of accumulating error by Best-fit in traditional way,the USMN can reduce the cumulative error by redistributing the weights of fitting elements. Therefore it increases the accuracy of multi-station measurement method,and provides an effective means in large scale engineering measurement. By comparing and observing the close degree of end-to-end and changes in radial direction of two methods,the USMN has been found closer to real situation than the traditional one.
引文
[1]张心光.基于船舶操纵性实验分析的辨识建模研究[D].上海:上海交通大学,2012.
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[4]刘建新,马强,杨再华.激光跟踪测量系统及其在航天器研制中的应用[J].航天器环境工程,2008,25(3):286-290.
[5]张于.基于同一空间测量网络的大尺寸测量方法[J].航天器环境工程,2011,28(3):277-281.
[6]马骊群,曹铁泽,王继虎,等.大尺寸坐标测量技术在大型部件装配应用中的若干问题[J].计测技术,2013,33(2):7-11.
[2]罗伟林.基于支持向量机方法的船舶操纵运动建模研究[D].上海:上海交通大学,2009.
[3]国家质量监督检验检疫总局.JJF 1242-2010激光跟踪三维坐标测量系统校准规范[S].北京:中国计量出版社,2010.
[4]刘建新,马强,杨再华.激光跟踪测量系统及其在航天器研制中的应用[J].航天器环境工程,2008,25(3):286-290.
[5]张于.基于同一空间测量网络的大尺寸测量方法[J].航天器环境工程,2011,28(3):277-281.
[6]马骊群,曹铁泽,王继虎,等.大尺寸坐标测量技术在大型部件装配应用中的若干问题[J].计测技术,2013,33(2):7-11.