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eltorio / RtkGps

Playing with rtklib on android
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Android raw GNSS #21

Open unrzn0 opened 5 years ago

unrzn0 commented 5 years ago

Hi, cool app. Any chance you want to use raw GNSS data from the phones built-in receivers in the future, as those now become more and more available? Some more info is also here, if you haven‘t heard about it yet (but you likely did anyways :) )

https://gis.stackexchange.com/questions/285000/gnss-raw-measurements-on-android-does-real-time-post-processing-differential-te

Signal is likely worse than with external receivers, but in terms of handling and wide availability, that seems very attractive.

nicastel commented 4 years ago

Experiment shows that it could be a viable solution : https://insidegnss.com/researchers-achieve-1-2-cm-accuracy-with-commercial-smartphone/ I wonder how hard would it be to support that on a mi 8 / mi 9 smartphone for example.

Mafketel commented 4 years ago

Application Programming Interface 24 (API 24), Android users have been able to directly access raw GNSS measurements within their smartphone, independently on the specific phone design or manufacturer Android 9.0 has new functionalities implemented in the API 28 someone who successfully got decent data from mi 8 phone and other devices including a "real" surveyors gps https://www.researchgate.net/project/Benchmark-of-smartphone-Xiaomi-Mi8-raw-GNSS-data-processing-solutions

https://rtklibexplorer.wordpress.com/2019/08/28/a-first-look-at-the-broadcom-bcm47755-dual-frequency-receiver/