测绘通报 ›› 2023, Vol. 0 ›› Issue (9): 25-29,45.doi: 10.13474/j.cnki.11-2246.2023.0259

• BDS-3精度评估及应用 • 上一篇    下一篇

北斗三号卫星导航系统在非洲地区控制测量的应用研究

赖金富1, 史俊波2, 胡翾1, 田坤1, 欧阳晨皓2   

  1. 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
  • 收稿日期:2023-01-09 发布日期:2023-10-08
  • 通讯作者: 史俊波。E-mail:jbshi@sgg.whu.edu.cn
  • 作者简介:赖金富(1981—),男,硕士,高级工程师,主要研究方向为大型水利水电工程、大型桥梁通道工程高精度控制网测量及实景三维测量。E-mail:12663142@qq.com
  • 基金资助:
    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)

BDS-3 for control surveying application within Africa

LAI Jinfu1, SHI Junbo2, HU Xuan1, TIAN Kun1, OUYANG Chenhao2   

  1. 1. Three Gorges Geotechnical Engineering Co., Ltd., Wuhan 430079, China;
    2. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
  • Received:2023-01-09 Published:2023-10-08

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。

关键词: 北斗三号, 控制测量, 基线解算, 网平差, 非洲地区

Abstract: 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.

Key words: BDS-3, control survey, baseline processing, network adjustment, Africa region

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