| 组合GNSS系统定位数据质量与精度比较分析 |
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| 引用本文： | 刘洋,曾群意,李建军,王旭峰.组合GNSS系统定位数据质量与精度比较分析[J].北京测绘,2020(1):118-122. |
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| 作者姓名： | 刘洋 曾群意 李建军 王旭峰 |
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| 作者单位： | 中国电力工程顾问集团西南电力设计院有限公司;四川电力设计咨询有限责任公司;深圳市罗湖区笋岗街道办事处 |
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| 摘 要： | 本文对组合GNSS系统进行静态相对定位测量与RTK测量试验,研究结果表明:在静态相对定位测量中,BDS的数据利用率、多路径效应误差优于GPS与GLONASS,BDS的定位精度优于GLONASS略低于GPS;组合系统中GPS/BDS与GPS/BDS/GLONASS的定位精度较优,引入GLONASS对定位精度改善的作用不明显。在RTK测量中,当观测条件理想时,GPS/BDS较GPS可见卫星数目多,PDOP值低,中误差小。当观测条件较差时,GPS/BDS较GPS可见卫星数目多,PDOP平均值低,中误差小,限差内固定解获得时间减少76.1%;GPS/BDS/GLONASS较GPS/BDS在中误差、水平精度和垂直精度上更优,限差内固定解获得时间更稳定可靠。
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| 关 键 词： | 全球定位系统(GPS) 北斗卫星导航系统(BDS) 全球卫星导航系统(GLONASS) 位置精度因子(PDOP) |
Comparison and Analysis of Quality and Accuracy of Positioning Data of Combined GNSS System |
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| LIU Yang,ZENG Qunyi,LI Jianjun,WANG Xufeng.Comparison and Analysis of Quality and Accuracy of Positioning Data of Combined GNSS System[J].Beijing Surveying and Mapping,2020(1):118-122. |
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| Authors: | LIU Yang ZENG Qunyi LI Jianjun WANG Xufeng |
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| Institution: | (CPECC Southwest Electric Power Design Institute Company Limited, Chengdu Sichuan 610021, China;Sichuan Electric Power Design & Consulting Company Limited, Chengdu Sichuan 610016, China;Sungang Sub-district Office of Luohu District in Shenzhen, Shenzhen Guangdong 518023, China) |
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| Abstract: | In this paper,the static relative positioning and the RTK test are performed on combined GNSS system,the research results indicate that the data utilization and multipath effect error of the BDS is better than the GPS and GLONASS in static relative positioning,and the positioning accuracy of BDS is better than that of GLONASS and slightly lower than that of GPS;the positioning accuracy of GPS/BDS and GPS/BDS/GLONASS in the combined systems is superior,but the introduction of GLONASS has no obvious effect on improving positioning accuracy.In the RTK measurement,when the observation conditions are ideal,the GPS/BDS has more visible satellites,lower PDOP value and smaller medium error than GPS.When the observation conditions are poor,compared with GPS,the GPS/BDS has more visible satellites,lower average PDOP value,smaller medium error and the time of fixed-solution within tolerance acquired is reduced by 76.1%;the GPS/BDS/GLONASS is better than the GPS/BDS in medium error,horizontal accuracy and vertical accuracy,and the time of fixed-solution within tolerance acquired is more stable and reliable. |
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| Keywords: | global positioning system(GPS) BeiDou navigation satellite system(BDS) global navigation satellite system(GLONASS) Position Dilution of Precision(PDOP) |
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