Android. GPS data filter, what kind of error do you think?



  • I wanted to find an example of an application with a successful GPS-data filter, downloaded two popular MyTracks, Open GPS Tracker. The first one developed the Googles themselves. Starting, both trackers write a precinct and have cellometers when the phone is in place (in 20 minutes, the first annex counted 2.5 km second 1.9 km, third without 4.5km filters). Traccar's service is on a demo server without a 3.7-kilometre dose. The phone's cheap and the GPS, too, but still:

    1. Is it really that bad? Read this error normal or normal. Did the developers have their hands dirty?
    2. When driving to the car, what kind of error is the rule?

    P.S. It's very relative, but there may be a man who ate a dog on this case and determined with the rules to build routes.


  • QA Engineer

    1. Your hands are fine. Only all the phones differently determine the coordinates. And it also depends on the weather, the building where you sit, etc. So if the program works on the street, it's okay.

    2. If you take a car every 200 meters. That's better. And try to fix the coordinates at:

      • 200 metres
      • If the cornering angle is greater than 15 °C
      • If the locking is not moving every minute.

    Try the program. https://www.traccar.org/

    Traccar (Server):

    git clone https://github.com/tananaev/traccar.git
    

    Traccar Client for Android:

    git clone https://github.com/tananaev/traccar-client-android.git
    

    Traccar Client for iOS:

    https://github.com/tananaev/traccar-client-ios.git
    



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