多操作系统智能手机的定位导航能力分析  

Analysis on positioning and navigation capabilities of multi-operating system smartphones

作　　者：施星宇 陈明剑[1] 李广云[1] 李万里[1] 蔡巍 吕葳 SHI Xingyu;CHEN Mingjian;LI Guangyun;LI Wanli;CAI Wei;LYU Wei(Institute of Geospatial Information,Information Engineering University,Zhengzhou 450001,China)

机构地区：[1]信息工程大学地理空间信息学院,郑州450001

出　　处：《导航定位学报》2024年第4期99-105,173,共8页Journal of Navigation and Positioning

摘　　要：针对智能手机全球导航卫星系统(GNSS)在城市峡谷条件下、多路径条件下的定位导航能力不足的问题,分析GNSS观测数据质量,对比定位结果,安卓手机采用伪距单点定位和伪距差分定位的方式进行数据处理,苹果手机采用融合数据进行定位解算。结果表明:苹果手机的载噪比明显高于安卓手机;环境良好的路段下,融合定位数据的结果相比于伪距差分定位准确度提升38 m左右,精度提升4 m左右,比单点定位结果准确度提升41 m左右,精度提升4 m左右;在多路径条件下,融合定位数据的结果相比于伪距差分定位准确度提升39 m左右,精度提升4 m左右,比单点定位结果准确度提升48 m左右,精度提升17 m左右;在城市峡谷环境下发现智能手机仅依靠GNSS导航的能力不足以满足日常定位需求,目前仍需要依靠融合定位来保障日常生活中导航的需求。The smartphone global navigation satellite system(GNSS)lacks sufficient positioning and navigation capability in urban canyons and multipath environments.This paper analyzed the quality of GNSS observation data and compared the positioning results.The pseudo-range single point positioning and pseudo-range differential positioning were used for data processing for Android operating system,while the fusion data was used for positioning calculation for Apple operating system.The result showed that the signal-to-noise ratio of Apple operating system was significantly higher compared to that of Android operating system.In terms of positioning and navigation capability,the fusion positioning data yielded an improvement in accuracy of approximately 38 and 4 m compared to the pseudo-distance differential positioning results under favorable road conditions,while also exhibiting an enhancement of about 41 and 4 m in accuracy when compared to single point positioning results.Under multipath conditions,the fusion positioning data demonstrated an improvement in accuracy of approximately 39 and 4 m compared to the results obtained from pseudo-range differential positioning.Additionally,it exhibited an advancement of about 48 m and a significant increase of approximately 17 m in accuracy when compared to single point positioning results.In urban canyon environments,it became evident that GNSS navigation capability on smartphones falled short of meeting daily positional requirements;thus necessitating reliance on integrated positioning methods to ensure adequate navigational needs was met.

关 键 词：智能手机 导航 精度 数据分析 城市峡谷 差分定位 

分 类 号：P228[天文地球—大地测量学与测量工程]