摘要
随着我国北斗三号全球卫星导航系统(BDS-3)的全面建成,基于BDS-3的高精度定位定姿应用需求日益迫切.推导了无电离层组合模式BDS-3精密单点定位(PPP)模型及地心地固坐标系下的惯性导航系统(INS)误差方程,构建了BDS-3 PPP/INS紧组合定位滤波模型,分别针对BDS-3 PPP、BDS-3 PPP/INS松组合、BDS-3 PPP/INS紧组合三种模式进行了定位性能评估.实验结果表明:BDS-3 PPP/INS松组合与BDS-3 PPP位置精度基本一致;BDS-3 PPP/INS紧组合在东(E)、北(N)、天顶(U)方向位置精度为分别7.9 cm、9.3 cm、9.4 cm,较BDS-3 PPP/INS松组合位置精度分别提升了38.3%、33.1%、35.6%,速度精度分别提升了27.3%、45.8%、12%,姿态精度相当.
With the completion of BDS-3 in China,the requirements of high-precision positioning and attitude determination based on BDS-3 is increasingly urgent.This paper derives the BDS-3 precise point positioning(PPP)model with ionosphere-free combination and inertial navigation system(INS)error equation in geocentric fixed coordinate system,and constructs the BDS-3 PPP/INS tight combination filtering model.This paper evaluates the positioning performance of BDS-3 PPP,BDS-3 PPP/INS loose combination model and BDS-3 PPP/INS tight combination model.The results of the experiment show that the position accuracy of BDS-3 PPP/INS loose combination is basically the same as that of BDS-3 PPP,the position accuracy of BDS-3 PPP/INS tight combination model in the east,north and sky directions is 7.9 cm,9.3 cm and 9.4 cm,which is higher than that of BDS-3 PPP/INS loose combination model by 38.3%,33.1%and 35.6%;the speed is improved by 27.3%,45.8%and 12%respectively in three directions;the attitude accuracy of both is equal.
作者
宋德彪
孙付平
肖凯
柯晔
商向永
于圆
SONG Debiao;SUN Fuping;XIAO Kai;KE Ye;SHANG Xiangyong;YU Yuan(Institute of Geospatial Information,Information Engineering University,Zhengzhou 450001,China;Troops 31618,Fuzhou 350000,China;Key Laboratory of Electro-Optical Countermeasures Test&Evaluation Technology,Luoyang Henan 471000,China;Troops 32021,Beijing 100000,China)
出处
《全球定位系统》
CSCD
2023年第2期30-35,共6页
Gnss World of China
基金
国家自然科学基金(42104034)
国家自然科学基金(42174047)。
