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1.武汉大学卫星导航定位技术研究中心,湖北 武汉,430079
2.武汉大学测绘学院,湖北 武汉,430079
3.武汉理工大学航运学院,湖北 武汉,430063
4.中国石化销售股份有限公司华中分公司,湖北 武汉,430015
5.重庆市地理信息和遥感应用中心,重庆,401147
Received:19 December 2024,
Published:05 May 2026
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唐卫明,张思宇,邓辰龙,等.单北斗接收机网络RTK增强定位服务性能分析[J].武汉大学学报(信息科学版),2026,51(5):904-913.
TANG Weiming,ZHANG Siyu,DENG Chenlong,et al.Analysis and Evaluation of Network Real-Time Kinematic Positioning Performance Based on Standalone BDS Receivers[J].Geomatics and Information Science of Wuhan University,2026,51(5):904-913.
唐卫明,张思宇,邓辰龙,等.单北斗接收机网络RTK增强定位服务性能分析[J].武汉大学学报(信息科学版),2026,51(5):904-913. DOI:10.13203/j.whugis20240157
TANG Weiming,ZHANG Siyu,DENG Chenlong,et al.Analysis and Evaluation of Network Real-Time Kinematic Positioning Performance Based on Standalone BDS Receivers[J].Geomatics and Information Science of Wuhan University,2026,51(5):904-913. DOI:10.13203/j.whugis20240157
网络实时动态差分(network real-time kinematic,NRTK)技术作为北斗卫星导航系统高精度定位的主要手段,已广泛应用于生产生活中的各领域,国产单北斗定位终端研制与推广的需求日益增强。利用武汉大学自主研发的NRTK数据处理软件PowerNetwork对单北斗接收机的NRTK服务性能进行系统分析和评估。以司南M300 Pro单北斗接收机为例,在武汉市4个站点进行数据采集,对基准站间模糊度解算、误差改正数生成和流动站用户定位3个方面的服务性能进行了综合评估。结果表明,基准站间模糊度解算中3条基线的宽巷模糊度和原始模糊度残差的平均标准差均优于0.1周,能够可靠确定模糊度;在误差改正数生成中,可视卫星对的电离层延迟误差精度优于1.00 cm,非弥散误差精度优于0.50 cm;在流动站用户端,模糊度固定率和正确固定率分别为99.72%和96.55%,且定位精度在水平方向可达1 cm,高程方向优于5 cm。单北斗接收机在上述3个方面的服务性能与多系统 GNSS 接收机的性能并无明显差异,流动站最终定位结果能够满足高精度测绘作业的需要。
Objectives
2
With the completion and operation of BeiDou navigation satellite system (BDS)
it can provide all-time
all-weather and high-accuracy positioning
navigation and timing services to global users. Network real-time kinematic (NRTK) technology
as the primary means of high-precision positioning for BDS
has been widely used in various fields. And the demand for development and promotion of the domestic standalone BDS receivers has been increasingly growing in recent years.
Methods
2
The data of standalone BDS receivers are process by PowerNetwork
which is a NRTK software developed independently by Wuhan University
to analyze and evaluate the NRTK performance. Sinan M300 Pro standalone BDS receiver is used to collect data at four stations in Wuhan City
and then the performance in three aspects
namely the ambiguity resolution between reference stations
generation of regional augmentation products
and real-time positioning for rover stations
are comprehensively evaluated. For ambiguity resolution
the ionospheric-free three-carrier ambiguity resolution method is used to process the three-frequency observations of BDS⁃2
while the B1I+B3I dual-frequency observations of BDS⁃2+BDS⁃3 are processed by the Melbourne–Wübbena method. For regional augmentation products
the corrections including dispersive and non-dispersive errors for the rover station are obtained by linear interpolation algorithm. In the positioning
Kalman filter is employed to determine the float ambiguity
and then the optimal position of rover station is obtained after the ambiguity is processed by least squares ambiguity decorrelation adjustment algorithm.
Results
2
The experimental results show that the average standard deviation of the wide-lane ambiguity and the original double-difference ambiguity residuals of the three baselines is better than 0.1 cycle
which can determine the ambiguity reliably. In terms of augmentation performance
the accuracy of ionospheric delay and non-dispersive errors for all visible satellite pairs are better than 1.00 cm and 0.50 cm
respectively. For real-time positioning
the fixed rate and the correctly fixed rate of ambiguity for rover are 99.72% and 96.55%
respectively. And the root mean square values in the horizontal and elevation directions are better than 1 cm and 5 cm
respectively.
Conclusions
2
The service performance of the domestic standalone BDS receivers in the above three aspects is not significantly different from that of multi-system GNSS receiver
and the final positioning accuracy can meet the needs of high-precision surveying and mapping.
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