基于CORS对流层延迟改正模型在山区地灾监测的分析应用  

Analysis and Application of Tropospheric Delay Correction Model Based on CORS in Mountain Disaster Monitoring

作　　者：邹崇尧 梁斌 厉芳婷 王鹏旭 林晓静 ZOU Chongyao;LIANG Bin;LI Fangting;WANG Pengxu;LIN Xiaojing(Hubei Institute of Surveying and Mapping Engineering,Wuhan 430074,China;Hubei Luojia Laboratory,GNSS Research Center of Wuhan University,Wuhan 430079,China)

机构地区：[1]湖北省测绘工程院,湖北武汉430074 [2]武汉大学卫星导航定位技术研究中心湖北珞珈实验室,湖北武汉430079

出　　处：《地理空间信息》2023年第12期100-102,共3页Geospatial Information

基　　金：湖北省自然资源科研基金资助项目(ZRZY2023KJ07)。

摘　　要：地灾监测是当下重点的卫星导航与位置服务应用场景,通常使用单基站或基准站网为监测点提供数据服务。由于地灾监测点普遍位于山区,当不便建设单基站,而区域基准站网与监测点又可能存在较大的高程差时,直接使用基准站网提供服务会产生对流层延迟建模的精度不一致,导致监测点高程数据不准确的问题。针对该问题,利用一种改进的线性插值方法,通过修正对流层延迟误差,经研究区域实验,结果表明在该实验区域内,高程方向的精度可提升到93.6%,可显著提升湖北省连续运行参考站系统提供地灾监测服务时各监测点高程方向的定位精度,为山区地灾监测场景提供稳定可靠的差分数据服务。Disaster monitoring is currently the key application scenario of satellite navigation and positioning services with a single base station or a reference station network to provide data services for monitoring points.Since the disaster monitoring points are generally located in moun-tain areas,when it is not convenient to build a single base station,there may be a large difference in elevation between the regional reference sta-tion and the monitoring point,directly using the reference station to provide services will result in inconsistencies in the accuracy of tropospheric delay modeling and inaccurate elevation data of monitoring points.To solve this problem,we used an improved linear interpolation method to correct the tropospheric delay error.After the experiment in the research area,the results show that the accuracy of elevation direction can be in-creased by 93.6%.It can significantly improve the positioning accuracy of elevation direction of each monitoring point when the continuous oper-ation reference station(CORS)system in Hubei Province provides disaster monitoring services,and provide a solution for stable and reliable dif-ferential data services for mountain disaster monitoring.

关 键 词：连续运行参考站系统 天顶对流层延迟 虚拟参考站 网络RTK 地灾监测 

分 类 号：P228[天文地球—大地测量学与测量工程]