数据与计算发展前沿2025，Vol.7Issue(1)：108-118,11.DOI:10.11871/jfdc.issn.2096-742X.2025.01.008
电离层和地形复杂区域北斗/GNSS实时PPP性能及大气分析
BDS/GNSS Real-Time PPP Performance and Atmosphere Analysis in Complex Ionosphere and Terrain Region
摘要
Abstract
[Objective]According to the problem of the regional applicability of real-time precise point po-sitioning(RT-PPP)performance and applications affected by ionospheric activity,[Methods]this paper selects the Hunan region,which is located in the transition zone between middle and low latitudes and has complex and hilly terrain,and uses State Space Representation(SSR)products to carry out RT-PPP performance and atmospheric analysis.[Result]Based on the experimental results using HNCORS data,the quality assessment of SSR products shows that,except for the three IGSO satellites(C38-C40)in the BDS-2 and BDS-3 constellations,the real-time orbits of other satellites reach an accuracy of 1-9 cm,and the accuracy of the real-time clock error reaches 0.2-0.3 ns.In terms of the atmospheric environment,the ionospheric activities in-ferred from the stations in the southern part of Hunan are generally higher than those from the stations in the northern part of Hunan,while the Zenith Total Delay(ZTD)trends obtained from ionosphere-free(IF)combina-tion and undifferenced uncombined(UDUC)models are basically the same,with a difference of only about 2 mm.However,the difference between two stations in the same area with large altitude differences can be as high as 26 mm and as low as 6 mm.In terms of positioning performance,the average values of 3D RMS/STD for stat-ic PPP can reach 3.2/2.0 cm,and those for kinematic PPP can reach 11.9/10.7 cm.The convergence time for static PPP is generally within 30 minutes,with the fastest being 10 minutes.The convergence time for kinematic PPP is generally within 60 minutes,with the fastest being 13 minutes.关键词
PPP-SSR/实时轨道/钟差/收敛时间/定位精度/大气分析/北斗/GNSSKey words
PPP-SSR/real-time orbit/clock/convergence time/positioning accuracy/atmospheric analysis/BDS/GNSS引用本文复制引用
肖斌宸,叶飞,叶险峰,曾翔强..电离层和地形复杂区域北斗/GNSS实时PPP性能及大气分析[J].数据与计算发展前沿,2025,7(1):108-118,11.基金项目
湖南省自然资源厅科技项目(20240105CH) （20240105CH）
湖南省科技创新计划(2023RC3217) （2023RC3217）
湖南省自然科学基金(2024JJ8329,2023JJ60560) （2024JJ8329,2023JJ60560）
博士科研启动项目(2017111701517) （2017111701517）
国家自然科学基金(42004016,42404042) （42004016,42404042）
