华为P40手机北斗三频观测数据质量及噪声分析  

Quality and Noise Analysis of BDS Triple-Frequency Observation from Huawei P40 Mobile Phone

作　　者：李敏[1] 张会超 李文文[1] 王广兴 LI Min;ZHANG Huichao;LI Wenwen;WANG Guangxing(GNSS Research Center,Wuhan University,129 Luoyu Road,Wuhan 430079,China;School of Geography and Information Engineering,China University of Geosciences,338 Lumo Road,Wuhan 430074,China)

机构地区：[1]武汉大学卫星导航定位技术研究中心,武汉市430079 [2]中国地质大学(武汉)地理与信息工程学院,武汉市430074

出　　处：《大地测量与地球动力学》2021年第7期661-665,699,共6页Journal of Geodesy and Geodynamics

基　　金：中国第二代卫星导航系统重大专项(GFZX030302030203);装备预研教育部联合基金(6141A02033340)

摘　　要：研究华为P40手机终端北斗三频观测数据质量及噪声特性,通过与测量型接收机对比分析发现,P40手机海思芯片具有较好的北斗三号信号捕获能力,B1I、B1C和B2a三频信号信噪比略低于测量型天线,且3个频点均存在与终端芯片相关的系统误差。外置天线零基线实验结果表明,P40手机海思芯片零基线定位精度达到mm级,伪距和载波相位噪声可达到测量接收机噪声精度水平,B2a伪距噪声优于0.5 m,3个频点的相位噪声均优于2 mm。We analyze the quality and noise characteristics of BDS triple-frequency observation of Huawei P40 mobile phone.Comparing with the measurement receiver,we find that the Hisilicon chip of P40 mobile phone has good capability of capturing BDS-3 signal.The signal-to-noise ratios of B1I,B1C and B2a signals are slightly lower than that of the measurement antenna,and there are system errors related to the terminal chip for the three signals.The external antenna zero-baseline results show that the zero-baseline positioning accuracy of Hisilicon chip of P40 mobile phone reaches mm level and the pseudorange and carrier phase noise have reached the level of measurement receiver noise accuracy.The pseudorange noise of B2a is smaller than 0.5 m,and the carrier phase noise of three signals are smaller than 2 mm.

关 键 词：P40手机 北斗三号 多频点 数据质量评估 

分 类 号：P228[天文地球—大地测量学与测量工程]