This video is a demonstration about how to perform Precise Point Positioning using GNSS Raw Measurements from Android Phones. As a reminder, absolute accuracy from the measurement only possible if the survey is conducted on known control points. However, for practical use, I got around 2-5 meter accuracy on 15 minutes observation time in clear sky view (obstruction and multipath are minimal) and using all available satellites in current GNSS constellation (GPS, GLONASS, GALILEO, BEIDOU and QZSS) supported in my Android Phone. My Phone is not decent (only support single frequency L1 measurement, so carrier phase/ARD/multi-frequency calculation is not possible). If you can have ARD supported phone, I guess you can achieve 1-2 meter accuracy or even sub-meter accuracy in optimal field condition.
You can use Google GNSSLogger or Geo++ RINEX App to perform raw GNSS Measurement (more apps are possible to be available in future).
Google GNSS Logger : [ Ссылка ]
Geo++ RINEX Logger : [ Ссылка ]
Canadian Natural Resources PPP Service : [ Ссылка ]
#gnss #mapping #android
