Analysis of the Quality of Smart Phone GNSS Positioning Achievements

With the release of version 7.0 of the Android system, smart phones began to support the output of GNSS original observations. Through correction and calculation, it is possible to achieve higher-precision positioning through the pseudocode and carrier phase observations of Android smart terminals. This article selects two mobile phones, Xiaomi Mi8 and Huawei P30, based on the BJFS base station observation data to complete the quality comparison analysis of the original observation data, and on this basis, the two positioning modes of single-point positioning and PPP precise point positioning Research on positioning solution and positioning quality. The experimental results show that there is a certain gap between the GNSS observation data of the smartphone and the professional measurement equipment in the original observation data quality and positioning results, and the positioning quality of different brands of mobile phones is also different. In the static precision single-point positioning mode, after about 10 minutes After the convergence time, the accuracy can reach the decimeter level, which has certain application prospects.