GPS103 accuracy signal
You can easily filter data by distance. This has been discussed countless number of times.
But I would need to filter on distances of 500m or so when the car is parked, meaning I'd loose many real positions.
You need to check if positions with 500m error are marked as valid or not. The sample that you provided is marked as valid ("A").
All points are "Valid" with accuracy 0.0, and the car is "ghostdriving" at 60km/h over the fields and through the trees, when it is supposed to be standing parked in the covered garage/barn.
Some trackers simply are not sending enough information. :-(
And the listings on ebay are just not accurate enough to tell if they are usable enough. If you don't want to pay for quality, you don't get quality, it seems :-(
I don't think it has anything to do with quality of the device. It's just limitations of GPS in general. In garage you probably get reflected signal which adds error.
Yeah, but then at least it should report the accuracy and number of satellites, so I can choose to accept or reject the data.
When my car is parked in the barn with tin roof it moves all over the place, several 100 meters.
Screenshot of map
It uses port 5001, GPS103
Is there any way to see the accuracy, to turn off reporting of the location if not accurate?
Or simply turn off reporting when inside geofence? It wastes much database space when it is "moving around", and I also get some alerts when it is leaving the rather large geofence circle I have made.
The device is connected to the ignition key, but I don't think I can see that data.