【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。更多还原

【Abstract】 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 orientation,we provide feasible ways of technical realization and evaluate the precisions of engineering location determination and orientation that might be reached using this technical solution.Also,the errors of point precision and effective range of coverage are calculated for the objects being monitored in specified areas.更多还原