四系统组合的RTK定位对不同长度基线性能的评估研究  

Research on evaluation of RTK positioning performance with four-system combination for different length baselines

作　　者：李兆哲 LI Zhaozhe(Chongqing Institute of Surveying and Maping Science and Technology,Chongqing 401329,China)

机构地区：[1]重庆市测绘科学技术研究院,重庆401329

出　　处：《测绘标准化》2024年第3期65-70,共6页Standardization of Surveying and Mapping

摘　　要：采用多系统进行全球导航卫星定位可以增加空中可用卫星数量,从而改善卫星定位几何模型。本文在GNSS不断建设与完善的背景下,对亚太地区BDS/GPS/Galileo/QZSS四系统组合的实时动态(RTK)定位性能进行评估与分析。首先,亚太地区BDS卫星数多于GPS和Galileo,BDS定位精度因子优于GPS和Galileo,四系统组合RTK定位时,卫星可见性和定位精度因子最优。四系统组合RTK定位试验结果表明,香港CORS监测网6条不同长度基线的定位精度无明显差异,基本处于同一水平;四系统组合RTK在亚太地区E、N、U方向的定位精度可以达到4.0 mm、2.2 mm、10.9 mm,定位精度符合RTK规范要求。Global navigation satellite positioning consisting of multiple systems can increase the number of available satellites to improve the positioning geometry.This paper analyzes and evaluates Real-time Kinematic(RTK)positioning performance of BDS/GPS/Galileo/QZSS combination in the Asia-Pacific region under the background of continuous construction and improvement of GNSS.First,it is found that BDS satellites in the Asia-Pacific region is more than GPS or Galileo,the positioning accuracy factor of BDS is better than those of GPS and Galileo,and the visibility and positioning accuracy factor of the four-system combination is the best.The RTK positioning accuracy with four-system combination indicates that there are no significant differences among the six baselines in different lengths in the Hong Kong CORS monitoring network,and they are basically at the same level.The positioning accuracy from RTK of the four-system combination in the E,N,and U direc‐tions in the Asia-Pacific region can be up to 4.0 mm,2.2 mm,and 10.9 mm,respectively,meeting the specification requirements of RTK.

关 键 词：BDS GPS GALILEO QZSS RTK定位 不同长度基线 定位精度 

分 类 号：P228[天文地球—大地测量学与测量工程]