Abstract:  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 1dm). 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.

Key words: smart phone, global navigation satellite system (GNSS), high-precision positioning, geographic information application