北斗三号卫星导航系统在非洲地区控制测量的应用研究  

BDS-3 for control surveying application within Africa

作　　者：赖金富[1] 史俊波[2] 胡翾[1] 田坤[1] 欧阳晨皓 LAI Jinfu;SHI Junbo;HU Xuan;TIAN Kun;OUYANG Chenhao(Three Gorges Geotechnical Engineering Co.,Ltd.,Wuhan 430079,China;School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China)

机构地区：[1]长江三峡勘测研究院有限公司,湖北武汉430079 [2]武汉大学测绘学院,湖北武汉430079

出　　处：《测绘通报》2023年第9期25-29,45,共6页Bulletin of Surveying and Mapping

基　　金：国家自然科学基金(42274050);长江三峡勘测研究院有限公司科研项目(SXYKY-2020-08)。

摘　　要：我国北斗三号卫星导航系统(简称北斗三号,BDS-3)具备全球服务能力,研究北斗三号的海外应用性能,有助于北斗三号在“一带一路”沿线国家的应用推广。本文首次将北斗三号应用于非洲赤道几内亚某工程测量控制网,该控制网采用点连式E级网观测策略,包含5个观测时段、11个控制点,每个时段的平均基线长度为3.67~6.25 km。使用国产接收机、国产基线解算软件和国产平差软件的数据处理结果表明:①在赤道几内亚,可观测到的北斗三号数量为8~10颗;②使用北斗三号的基线解算、三维无约束平差、二维平面约束平差,整体精度优于GPS;③使用北斗三号得到的控制点二维平面坐标,与GPS的差异不超过1.09 cm。本文验证了北斗三号在非洲地区具备与GPS相当的控制测量应用性能。对于北斗三号控制测量应用走向全球,提供了参考。China s BDS-3 satellite navigation system is capable of global positioning service.Investigation of BDS-3 for control surveying will promote BDS-3 applications in countries along the“Belt and Road”.This paper,for the first time,applies BDS-3 to an engineering survey control network in Equatorial Guinea,Africa.The control network adopts the point-connected E-class network observing strategy.Five sessions and 11 control points are designed in this network with average baseline distance of 3.67~6.25 km.The data processing results using domestic receiver,domestic baseline processing software and domestic adjustment software show that:①the number of observed Beidou-3 satellite is 8~10 in Equatorial Guinea;②the overall accuracy of BDS-3 is better than GPS in terms of baseline loop misclosure,three-dimensional unconstrained adjustment and two-dimensional plane constraint adjustment;③two-dimensional plane coordinates obtained by BDS does not exceed 1.09 cm with respect to those of GPS.This paper verifies that BDS-3 has comparable control surveying performance as GPS in Africa,which provides a valuable reference for BDS-3 control surveying application to the globe.

关 键 词：北斗三号 控制测量 基线解算 网平差 非洲地区 

分 类 号：P228[天文地球—大地测量学与测量工程]