东莞市CORS站址分析及系统测试分析  

Site Location and System Test Analysis of CORS in Dongguan

作　　者：钟凤庆 张子康 ZHONG Fengqing;ZHANG Zikang(Dongguan Natural Resources Bureau,Dongguan 523000,China;Nanjing Tech University,Nanjing 211800,China)

机构地区：[1]东莞市自然资源局,广东东莞523000 [2]南京工业大学,江苏南京211800

出　　处：《城市勘测》2024年第4期74-77,共4页Urban Geotechnical Investigation & Surveying

摘　　要：卫星导航定位基准站不仅是提供高精度时空基准的重要基础设施,也是导航与位置服务、精密卫星定轨、地质灾害监测等工程和科学研究的前提,GNSS数据质量分析结果可为连续运行卫星定位基准站选址建设提供重要的数据支撑。本文基于Anubis软件,以东莞市预设5个CORS站点为例,从数据完好观测值比例、多路径效应、周跳比和信噪比四方面指标评估预设CORS站点观测环境情况,并进行了系统兼容性测试、系统性能测试以及实时定位精度测试。结果表明:预设CORS站点周围环境干扰小,数据质量符合IGS标准,系统兼容各大卫星导航系统,初始化时间短,固定成功率接近100%,实时定位精度达厘米级,整体满足设计要求。Satellite navigation and positioning reference station is not only an important infrastructure to provide high-precision spatial and temporal reference,but also a prerequisite for engineering and scientific research such as navigation and location services,precision satellite orbiting,geological disaster monitoring,etc.The results of GNSS data quality analysis can provide important data support for the siting and construction of continuous operation satellite positioning reference station.Based on Anubis software,this paper takes five preset CORS stations in Dongguan City as an example,and evaluates the observation environment of the preset CORS stations in terms of the proportion of intact observations,multipath effect,weekly hopping ratio,and signal-to-noise ratio,and carries out the system compatibility test,the system performance test,and the real-time positioning accuracy test.The results show that the preset CORS site has little interference from the surrounding environment,the data quality meets the IGS standard,the system is compatible with major satellite navigation systems,the initialization time is short,the fix success rate is close to 100 percent,the real-time positioning accuracy reaches the centimetre level,which overall meets the design requirements.

关 键 词：站址分析 Anubis 数据质量分析 CORS性能分析 

分 类 号：P228[天文地球—大地测量学与测量工程]