远海环境低成本RTK接收机多路径效应与平滑伪距单点定位性能  

Multipath Effects and Smoothing Pseudorange SPP Performance of Low-Cost RTK Receivers in Remote Ocean Environment

作　　者：彭凌智 燕兴元 杨萌 冯伟[1,2] 钟敏[1,2] PENG Lingzhi;YAN Xingyuan;YANG Meng;FENG Wei;ZHONG Min(School of Geospatial Engineering and Science,Sun Yat-Sen University,Zhuhai 519082,China;Key Laboratory of Comprehensive Observation of Polar Environment,Ministry of Education,Sun Yat-Sen University,Zhuhai 519082,China)

机构地区：[1]中山大学测绘科学与技术学院,广东省珠海市519082 [2]中山大学极地环境立体观测与应用教育部重点实验室,广东省珠海市519082

出　　处：《大地测量与地球动力学》2024年第7期674-679,共6页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(42304021);中山大学高校基本科研业务费(23qnpy09,22lgqb09)。

摘　　要：低成本RTK接收机抗多路径性能较弱,导致远海环境中的单点定位性能显著下降。综合分析远海环境中载波相位平滑抑径算法对低成本RTK接收机单点定位性能的影响。结果表明,远海环境中RTK接收机的多路径效应为陆地环境的2~3倍,E5频点的抗多路径性能最强;平滑抑径效果与伪距多路径效应大小有关,采用平滑抑径算法后,RTK接收机SPP定位精度在远海环境提升62%,在陆地环境提升24%;平滑抑径后GPS/Galileo/BDS-3多系统SPP定位精度优于1 m,可满足海上较精细作业的需求。Low-cost real-time kinematic(RTK)receivers exhibit weaker resistance to multipath effects,leading to a significant decline in single point positioning(SPP)performance in remote ocean environment.We comprehensively analyze the impact of carrier phase smoothing multipath reduction algorithm on the performance of low-cost RTK receivers in remote ocean environment.The results show that the multipath effects on RTK receivers in remote ocean environment are 2~3 times greater than that in land environment,with the strongest resistance observed at E5 frequency.The effectiveness of smoothing multipath reduction is related to pseudorange multipath effects.After using smoothing multipath reduction algorithm,the SPP accuracy of RTK receivers improves by 62%in remote ocean environment and 24%in land environment.The SPP accuracy of GPS/Galileo/BDS-3 multi-systems is superior to 1 meter,meeting the precision requirements for fine ocean operations.

关 键 词：RTK接收机 伪距单点定位 远海环境 多路径效应 载波相位平滑伪距 

分 类 号：P228[天文地球—大地测量学与测量工程]