观测时长与北斗变形监测性能的定量分析  

Quantitative Analysis between Observation Duration and BDS Deformation Monitoring Performance

作　　者：唐雨 史俊波[1] 侯诚 郭际明[1] 邹进贵[1] TANG Yu;SHI Junbo;HOU Cheng;GUO Jiming;ZOU Jingui(School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China)

机构地区：[1]武汉大学测绘学院,武汉市430079

出　　处：《大地测量与地球动力学》2025年第4期339-343,391,共6页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(42274050);自然资源部地质灾害智能监测与风险预警工程技术创新中心开放基金(TICGM-2023-06)。

摘　　要：基于2023年26496个不同观测时长的北斗监测序列,构建北斗监测结果可用率、监测精度与观测时长的定量函数表达式。结果表明:1)监测结果可用率与观测时长存在明显的正相关,6个监测点的平均相关系数为0.73;N、E、U方向的监测精度与观测时长存在明显的负相关,相关系数分别为-0.83、-0.90和-0.77。2)为保证监测结果的高时效、高可用率(>95%)和高精度(平面优于3 mm、高程优于5 mm),建议最佳观测时长为3 h。Based on 26496 BDS monitoring sequences with various observation durations in 2023,we establish quantitative function expressions relating the availability rate,monitoring precision of BDS results to observation duration.The results show that there is a significant positive correlation between the availability rate of monitoring results and observation duration,with an average correlation coefficient of 0.73 for six monitoring stations.The monitoring precision in N,E,U directions exhibit significant negative correlations with observation duration,with correlation coefficients of-0.83,-0.90,and-0.77,respectively.To ensure high timeliness,high availability rate(>95%),and high precision(horizontal precision better than 3 mm,vertical precision better than 5 mm),an optimal observation duration of 3 hours is recommended.

关 键 词：北斗 观测时长 监测结果可用率 监测精度 相关性分析 

分 类 号：P228[天文地球—大地测量学与测量工程]