利用北斗网络RTK变形监测的关键技术研究  

Research on Key Technologies of Network RTK Deformation Monitoring Based on BDS

作　　者：范小洁 赵鹏 邹崇尧 吴林琛 魏以宽 FAN Xiaojie;ZHAO Peng;ZOU Chongyao;WU Linchen;WEI Yikuan(Hubei Institute of Surveying and Mapping,Wuhan 430074,China;Wuhan Institute of Shipping Communication,Wuhan 430205,China)

机构地区：[1]湖北省测绘工程院,湖北武汉430074 [2]武汉船舶通信研究所,湖北武汉430205

出　　处：《地理空间信息》2024年第10期104-107,116,共5页Geospatial Information

基　　金：湖北省自然资源厅科技资助项目(zrzy2023kj07)。

摘　　要：北斗导航系统是中国自主研发建设的卫星导航系统,是中国国家重点发展的战略性基础设施。自2000年启动建设以来,北斗系统已经取得了巨大成就。由于其具有连续监测、监测点间无需通视、不受恶劣天气影响等优势,能够高精度地实时监测变形体或者地面的几何变形量,可以对短时间内超过阈值的监测点及时报警,对长时间的监测点进行变形速率分析,已在滑坡灾害监测中进行了广泛应用。但是也存在着诸如设备成本高昂,观测数据质量要求高,滑坡体上选点选址困难等诸多限制因素。以湖北省北斗基准站网及其网络RTK定位服务为核心,在开展并完成典型区域的监测基准框架建立、虚拟参考站(VRS)监测模式精度验证和VRS虚拟观测值完好性监测,以及基于监测,基准框架的时间序列分析等工作的基础上,探讨了基于北斗的网络实时动态差分(RTK)变形监测的关键技术以及应用前景,实验结果显示实测数据和VRS虚拟观测值的基线解算结果残差时间序列在均值附近平稳波动,同时测试的2个系统GPS+BDS观测值均可以实现观测时段的95%以上的覆盖率,VRS虚拟观测值解算出的流动站坐标较为稳定,为推动湖北省连续运行卫星定位服务系统(HBCORS)在滑坡监测领域的应用提供关键技术支撑。BDS is a satellite navigation system independently developed and built by China,and it is a strategic infrastructure developed by China.Since the construction started in 2000,BDS has made great achievements.Because it has the advantages of continuous monitoring,no intervisibility between monitoring points and no influence of bad weather,BDS can monitor the geometric deformation of deformed body or ground in real time with high precision,give an alarm to monitoring points that exceed the threshold in a short time,and analyze the deformation rate of monitoring points for a long time,which has been widely used in landslide disaster monitoring.However,there are also many limiting factors,such as high equipment cost,high quality of observation data and difficulty in site selection on landslide.Based on the BDS reference station network and its network RTK positioning service in Hubei Province,we discussed the key technologies and application prospects of network RTK deformation monitoring based on BDS.The experimental results show that the residual time series of measured data and VRS virtual observation baseline solution results fluctuate smoothly around the mean value.At the same time,the GPS+BDS observation values of the two systems tested can achieve more than 95%coverage of the observation period,and the coordinates of moving station calculated by VRS virtual observation value are stable.This study can provide key technical support for promoting the application of HBCORS in the field of landslide monitoring.

关 键 词：北斗导航系统 变形监测 虚拟参考站 基准框架 

分 类 号：P228[天文地球—大地测量学与测量工程]