单/双频混合数据的Android手机精密单点定位方法  

Precise point positioning methodological research for Android phones based on single/dual-frequencyhybriddata

作　　者：逯遥 聂志喜[1] 王振杰[1] 徐晓飞 张远帆 王翔[1] LUYao;NIE Zhiri;WANG Zhenjie;XU Xiaofei;ZHANG Yuanfan;WANG Xiang(College of Oceanography and Space Informatics,China University of Petroleum,Qingdao,Shandong 266580,China)

机构地区：[1]中国石油大学(华东)海洋与空间信息学院,山东青岛266580

出　　处：《测绘科学》2023年第8期64-71,129,共9页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(42104011,42174020);山东省自然科学基金项目(ZR2021QD069);中央高校基本科研业务费专项资金项目(20CX06044A)。

摘　　要：针对单频精密单点定位(SF-PPP)电离层误差难消除,双频精密单点定位(DF-PPP)数据少,导致单一方法定位精度低、算法收敛慢的问题,该文将SF-PPP与DF-PPP相结合,提出了一种混频精密单点定位(MF-PPP)方法。该方法对所观测到的第一频段数据采用电离层产品进行电离层改正,对有第二民用信号的数据采用消电离层观测值,综合采用两类观测值进行精密单点定位。通过仿动态、动态实验对MF-PPP方法进行了验证,结果表明在仿动态实验中,MF-PPP相对于SF-PPP在水平、垂直方向上的均方根(RMS)分别提高了33.66%、33.70%;相对于DF-PPP在水平、垂直方向上的RMS分别提高了13.22%、21.52%;在动态实验中,MF-PPP相对于SF-PPP在水平、垂直方向上的RMS分别提升了26.17%、39.17%,相对于DF-PPP在水平、垂直方向上的RMS分别提升了11.50%、21.63%。所提方法能有效提高定位精度。Aiming at the problem that the ionospheric error of SF-PPP is difficult to eliminate,and the DF-PPP data is small,resulting in low positioning accuracy and slow convergence of the algorithm of a single method,SF-PPP and DF-PPP were combined to propose a MF-PPP method in this paper,ionospheric correction was carried out by ionospheric products for the observed first frequency band data,and ionospheric-free observation values were used for data with the second civil signal,and the two types of observations were comprehensively used for precision single-point positioning.The results showed that the RMS of MF-PPP in horizontal and vertical directions was increased by 33.66%and 33.70%respectively compared with SF-PPP in dynamic imitation experiments.Compared with DF-PPP,the RMS in the horizontal and vertical directions increased by 13.22%and 21.52%,respectively.In the dynamic experiment,the RMS of MF-PPP increased by 26.17%and 39.17%in the horizontal and vertical directions relative to SF-PPP,and by 11.50%%and 21.63%in the horizontal and vertical directions relative to DF-PPP.The proposed method could improve the positioning accuracy.

关 键 词：安卓智能手机 全球定位导航系统 单/双频混合数据 精密单点定位 混频精密单点定位 

分 类 号：P228[天文地球—大地测量学与测量工程]