基于Android智能手机的GNSS定位精度和准度分析

Analysis of GNSS Positioning Accuracy and Precision Based on Android Smartphone

为更准确定位Android终端(GNSS:Global Navigation Satellite System)定位精度,使手机更好地在泛测绘场景应用,选取两个典型测点,通过48 h连续观测并采用GAMIT/GLOBK软件解算获得测点"真实"坐标。使用两款智能手机采集全球导航卫星系统原始观测数据,进行静态和动态定位精度和准确度对比实验。结果表明,三星Galaxy S8定位结果普遍优于华为P10;静态后处理,LGO(Leica Geo Office)解算结果好于RTKLIB解算结果;动态实时解,三星Galaxy S8实现固定解且具有较好的准度(优于1dm);华为P10的结果较差,准度在3.18~5.52 m之间,精度在2.67~4.88 m之间,且未实现固定解。

In order to more accuratey locate the positioning accuracy of Android terminal, the mobile can be better applied in fan mapping scene, we select two typical measuring points, through 48 hours of continuous observation and using GAMIT/GLOBK software to calculate the “real” coordinates of the measuring points. Two smart phones are used to collect GNSS(Global Navigation Satellite System) raw observation data, and conduct static and dynamic positioning accuracy and accuracy comparison experiments. The results show that the positioning results of the Samsung Galaxy S8 are generally better than those of the Huawei P10;the static post-processing, the LGO(Leica Geo Office) solution result is better than the RTKLIB solution;the dynamic real-time solution of Samsung Galaxy S8 achieves a fixed solution and has better accuracy(better than 1 dm). The results of Huawei P10 are poor, with accuracy ranging from 3.18 m to 5.52 m, accuracy ranging from 2.67 m to 4.88 m, and no fixed solution is achieved. The positioning accuracy and accuracy of consumer-grade GNSS mobile terminals are fully recognized.