首页|BDS-3/BDS-2及BDS-3+BDS-2中长基线控制测量定位性能分析

BDS-3/BDS-2及BDS-3+BDS-2中长基线控制测量定位性能分析

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针对北斗系统当前提供的BDS-3+BDS-2定位信号,为了比较分析BDS-3/BDS-2及BDS-3+BDS-2中长基线控制测量定位性能差异,该文从基线解算模型和网平差处理模型两个角度建立北斗控制测量定位模型,选取某工程同时支持BDS-3+BDS-2、GPS双频数据的9个首级控制点形成中长基线控制测量定位网进行数据处理,从相位观测值精度、验后标准化均方根误差、基线解算质量和网平差点位结果等四方面作定位性能分析.通过中长基线控制测量定位实验结果表明:与GPS相比,无论是BDS-3+BDS-2还是BDS-3在X向、Y向、H向以及平面上和点位上的较差仅存在毫米级的差异,而BDS-2在X向、H向以及平面上和点位上的较差存在毫米至厘米级差异,仅在Y向上存在毫米级差异;BDS-3+BDS-2定位精度与BDS-3基本相当,但BDS-2定位精度均次于BDS-3+BDS-2和BDS-3,其中在高程方向上较为明显.
Positioning performance analysis for medium-long baseline control surveying of BDS-3/BDS-2 and BDS-3+BDS-2
In order to compare and analyze positioning performance for medium-long baseline control surveying of BDS-3/BDS-2 and BDS-3+BDS-2 under the current BDS-3+BDS-2 positioning signals provided by BDS system.The positioning model of BDS control surveying is established from the perspectives of baseline resolution model and network adjustment model in this paper.Nine first-order control points from certain engineering that simultaneously support BDS-3+BDS-2 and GPS dual-frequency data are selected to form a medium-long baseline control surveying positioning network for data processing.The positioning performance is analyzed from four aspects includes phase observation accuracy,posterior standardized root mean square error,baseline resolution quality,and network adjustment point positioning results.The experimental results of measuring and positioning through medium to long baseline control show that compared with GPS,both BDS-3+BDS-2 and BDS-3 show only millimeter level differences in the X,Y,H,plane,and point directions,while BDS-2 shows millimeter to centimeter level differences in the X,H,plane,and point directions,and only millimeter level differences in the Y direction;The positioning accuracy of BDS-3+BDS-2 is basically comparable to that of BDS-3,but the positioning accuracy of BDS-2 is inferior to that of both BDS-3+BDS-2 and BDS-3,which is more obvious in the elevation direction.

BeiDou satellite navigation systembaseline resolutionnetwork adjustmentmediumlong baselinecontrol surveyingpositioning accuracy

周命端、白岩松、徐翔、崔立锟、解乾龙、姬旭

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北京建筑大学 测绘与城市空间信息学院,北京 102616

北斗卫星导航系统 基线解算 网平差 中长基线 控制测量 定位精度

教育部产学合作协同育人项目教育部产学合作协同育人项目中国建设教育协会教育教学科研立项重点课题项目

2207047182925192208023132316262023011

2024

10.16251/j.cnki.1009-2307.2024.06.003

测绘科学
中国测绘科学研究院

测绘科学

CSTPCD北大核心
影响因子：0.774
ISSN：1009-2307
年,卷(期)：2024.49(6)