基于北斗定位导航系统的区域CORS系统精度与性能分析

Precision and performance analysis of regional CORS system based on BDS enhancement

随着北斗卫星导航系统(BDS)的组网建设完成,北斗卫星导航系统的定位精度和应用能力逐步增强,基于北斗增强的CORS系统组网建设具有重要意义。针对基于北斗增强的CORS系统建立,研究了站址数据质量分析、基站数据平差解算、初始化时间测试,并从应用的角度试验了RTK定位精度和高程精度。结果表明,基于BDS增强的区域CORS系统站址数据质量高,初始化时间和成功率明显增强,总体内符合精度优于1cm,总体外符合精度优于3cm,各测回高程互差差值更小,定位精度更高,可以认为经过BDS增强的区域CORS系统精度与性能显著提高,满足高精度实时定位的要求。

With the completion of the Beidou satellite navigation system network construction,the positioning accuracy and application capabilities of the Beidou satellite navigation system are gradually enhanced.The construction of the CORS system network based on the Beidou enhancement has great significance.Aiming at the establishment of the Beidou-based enhanced CORS system,the site data quality analysis,base station data adjustment calculation,and initialization time test were studied,and the RTK positioning accuracy and elevation accuracy were tested from an application perspective.The results show that the regional CORS system based on the enhanced BDS has high data quality,significantly improved initialization time and success rate,overall accuracy within 1 cm and overall accuracy over 3 cm,and the difference in elevation of each measurement round is smaller.,The positioning accuracy is higher,it can be considered that the accuracy and performance of the regional CORS system enhanced by BDS has been significantly improved to meet the requirements of high-precision real-time positioning.