某特种工程中精密定位、定向的实现  

Implementation of the precise positioning and orientating in a special engineering survey

作　　者：羊远新[1] 朱智勤[1] 孙占义[2] 

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]国家基础地理信息中心,北京100048

出　　处：《测绘工程》2010年第3期39-42,共4页Engineering of Surveying and Mapping

摘　　要：针对某特种工程中长距离精密定位、定向的需要,从高等级GPS控制网精度、加密GPS控制网精度、坐标投影误差、板块漂移影响及工程放样误差等方面分析和估算误差影响,探讨达到精度指标要求的可能性。针对潜在的定位、定向的影响因素,提出合理的技术实现方案,评价采用该技术方案后,工程定位、定向实际达到的精度,并对特定区域内被监测目标的点位精度、有效覆盖范围误差做出推算。This work aims at solving the needs of precise location determination and orientation in long distances in special engineering projects.Here we analyze and estimate the effects of errors,considering the precisions of high-level GPS control network and refined GPS control network,errors of coordinate projection,effects of plate drift,and errors of engineering setting-out.The possibility of meeting the requirement of precision criterion is also discussed.For the potential effects of location determination and...

关 键 词：定位 定向 坐标系统 GPS 坐标投影 板块漂移 

分 类 号：P228.4[天文地球—大地测量学与测量工程]