Due to its requirements for well-positioned base stations and lengthy times-to-first-fix, the Precise Point Positioning (PPP) techniques for decimeter positioning haven't found widespread application in navigation in smartphones. In principle, a global network of PPP base stations can provide decimeter-level accuracy to various positioning applications, including smartphone-based navigation. However, a global network of PPP base stations that can monitor and gather satellite information is expensive to build and maintain. This disclosure describes a crowdsourced, dense, PPP network and ephemeris-coverage map that can enable GNSS chipsets (e.g., utilized in smartphones and other mobile devices) to obtain decimeter-level positioning accuracy.

Creative Commons License

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.