GPS实时单站测速和相对测速的误差比较与精度分析  

Error Comparison and Accuracy Analysis between Stand-Alone and Relative Velocity Determination Using GPS

作　　者：李乐乐 贺凯飞 王振杰[1,3] 赵强 LI Lele;HE Kaifei;WANG Zhenjie;ZHAO Qiang(School of Geosciences,China University of Petroleum(East China),66 West-Changjiang Road,Qingdao 266580,China;Shandong Electric Power Engineering Consulting Institute Co Ltd,106 Minziqian Road,Jinan 250013,China;Laboratory for Marine Mineral Resources,Qingdao National Laboratory for Marine Science and Technology,62 Fuzhou Road,Qingdao 266071,China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,青岛市266580 [2]山东电力工程咨询院有限公司,济南市250013 [3]青岛海洋科学与技术试点国家实验室海洋矿产资源评价与探测技术功能实验室,青岛市266071

出　　处：《大地测量与地球动力学》2019年第10期1063-1069,共7页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(41604027);国家重点研发计划(2016YFB0501700,2016YFB0501705);青岛海洋科学与技术国家实验室开放基金(QNLM2016ORP0401);山东省自然科学基金(ZR2016DQ01);地理信息工程国家重点实验室开放基金(SKLGIE2015-Z-2-1);地球空间环境与大地测量教育部重点实验室开放基金(15-01-03);中央高校基本科研业务费专项(18CX02054A);青岛市源头创新计划(17-1-1-100-jch)~~

摘　　要：基于GPS多普勒测速原理,结合广播星历介绍实时单站测速和相对测速的数学模型,分析并对比两者的误差源及其对测速精度的影响,然后采用实测数据进行静态环境下和低动态环境下测速精度的实验验证。结果表明,在基线长度约为600 km的静态环境下,采用原始多普勒观测值相对测速精度和单站测速精度都为cm/s级,且相对测速RMS值大于单站测速RMS值;采用高频相位导出多普勒观测值两种测速模式的精度都为mm/s级,且相对测速RMS值略小于单站测速RMS值。在低动态环境下,采用原始多普勒观测值两种测速模式精度都为dm/s级,采用高频相位导出多普勒观测值两者精度都为cm/s级。Based on GPS Doppler velocity determination,we compare the error sources between stand-alone GPS velocity and relative GPS velocity,and analyze the influence of these errors on accuracy using GPS broadcast ephemeris.Then,experiments are carried out with static and low-dynamic data.The results show that in static environments the baseline distance is about 600 km,the accuracy of standalone velocity and relative velocity both can achieve a level of cm/s using raw Doppler,and the RMS of stand-alone velocity is lower than that of relative velocity.The accuracy of stand-alone velocity and relative velocity can achieve a level of mm/s using carrier phase-derived Doppler,and the RMS of relative velocity is lower than that of stand-alone velocity.In low-dynamic environments,the accuracy of stand-alone velocity and relative velocity both can achieve a level of dm/s using raw Doppler,and they can achieve a level of cm/s using high-frequency carrier phase-derived Doppler.

关 键 词：多普勒测速 误差分析 单站测速 相对测速 

分 类 号：P228[天文地球—大地测量学与测量工程]