摘要
针对当前Galileo多频信号定位精度评估问题,基于KAT1站连续3 d的多频数据和经过改进的双频无电离层组合模型,分析Galileo系统不同双频组合精密单点定位精度。分析结果表明,E1/E5a、E1/E5b和E1/E53种组合静态与动态精密单点定位精度相当,水平位置精度和高程精度都达到厘米级,而E5a/E5b组合定位精度相对较差,水平位置精度和高程精度仅达到分米级。建议在实际应用中,要避免使用E5a/E5b组合进行定位。
Aiming at the current Galileo multi frequency signal positioning accuracy evaluation problem,the PPP accuracy of different dual frequency combinations of the Galileo system is analyzed based on the multi frequency data of KAT1 station for 3 days and the improved dual frequency ionospheric free combination model.The analysis results show that the accuracy of three combinations of E1/E5a,E1/E5b and E1/E5 have equivalent static and dynamic PPP,and the horizontal accuracy and elevation accuracy can reach centimeter level,while the combined positioning accuracy of E5a/E5b is relatively poor,and the horizontal accuracy and elevation accuracy can only reach decimeter level.It is recommended to avoid using the E5a/E5b combination for positioning in practical applications.
作者
王新来
唐宇鹏
WANG Xinlai;TANG Yupeng(North China(Tianjin)Geographic Information Co.,Ltd.,Tianjin,300000,China)
出处
《测绘标准化》
2022年第1期18-21,共4页
Standardization of Surveying and Mapping
