全球导航定位系统与内蒙古卫星定位服务系统测量精度对比分析

Analysis of Measurement Accuracy Comparision Between GNSS and NMGCORS

根据某供电项目测图控制网建立的数据,将全球导航定位系统(GNSS)与内蒙古连续运行卫星定位服务系统(NMGCORS)测量的结果进行精度对比,分析结果表明,在起算点、网形一致的情况下,2种测量方法解算和测量得到的未知点坐标相差不大,在一般地区、非重要工程控制测量时,NMGCORS测量作业强度小,耗时短、省人力物力,具有较大优势。最后分析了2种方法在实际应用中存在的问题,测量时还需根据具体情况进行选择。

According to the data based on Ihe mapping conlrol network in a power supply project, make accuracy comparison of the measuring resuhs between Ihe use of global navigation and positioning system （GNSS） and continuous running of Inner Mongolia salellite positioning service system （NMGCORS）. The analysis result shows thal the unknown point coordinates obtained from the two ways on the basis of the same starting point and the same net shape. In general, for the unimportant engineering control survey, NMGCORS survey＇s work intensity is small, time consuming is short, and it is benefit for saving manpower material resources. Finally analyze the issues existing in the two measuring methods in practical application, and it is necessary to choose the measuring method according to the specific situation.