Weird GPS inaccuracies

[jefmcg]

Is anyone else getting weird leaps in GPS? Mostly it's very reliable, but last week I was in South Kensington (London) but GoogleMaps, TrackMe and TomTom all placed me mid-English Channel. Looking at my trackme trips, I found that I spent a few moments in Tunisia the week before, and you will be very impressed by my 15 minute cycle this morning ....

http://forum.xda-developers.com/attachment.php?attachmentid=105422&stc=1&d=1218452930

Anyone else getting this?

joan

[benjimen]

If you search this forum on GPS, you'll find some stuff, like here: http://forum.xda-developers.com/showpost.php?p=2509292&postcount=3

[jefmcg]

If you search this forum on GPS, you'll find some stuff, like here: http://forum.xda-developers.com/showpost.php?p=2509292&postcount=3

I'm not talking about a few metres or a couple of hundred metres - I'm getting anomalous gps readings that are hundreds or even thousands of kilometres from my actual location.

These seem to be happening more and more frequently ....

[Philip]

I have had something similar - on Saturday (and also in the London area), for a few minutes TomTom told me that I was travelling at over 300mph. Now I know that the white van that I had hired for the day is much faster than my 911, but not that much faster!

I have also had a much weaker signal than usual recently - normally TomTom shows 4 or 5 bars, but over the last few weeks it has often been at 1 or 2 bars.

I had assumed that there were some atmospheric causes at play, but would be interested in any other explanations.

[benjimen]

I've noticed the GPS in my Cruise acts up when 3rd party media players are running, mainly Resco Radio (when it's streaming, I frequently drop all GPS connections--when I press the top button to blank the screen, Resco's audio mutes when the amber GPS LED blinks, then comes on when it goes out... on--off--on--off, I have to leave the screen on to make it work) and Conduits Pocket Player (the device spontaneously reboots when the Player & GPS are both active). Both the players work without issue if GPS isn't being used.

When WMP or the HTC media player are running with GPS active, everything seems to 'get along' better.

I'm hoping this, and other little annoyances with the device clear up when 6.1 is released -- probably a good idea, and less frustrating, to hold off on doing to much troubleshooting until then...

[pananza]

I experienced something similar. I had the phone with me on a boat to check the top speed of the boat. I showed the boat to be traveling at nearly 200 km/h which is far to fast. So I loaded google maps and it placed me in a whole different country. A soft reset solved the problem.

This has not happened before, but I have experienced TomTom getting a hiccup when driving a few times. Suddenly the whole map turns upside down and it starts screaming about me having to do a u-turn as soon as possible. But after a few seconds it resolves again. This does not happen when in a town and the signal is bad. It can just as well happen with good line of sight and a good signal.

Perhaps the US is tampering with the GPS signals because of the problems in Georgia?

[Bodisson]

Perhaps the US is tampering with the GPS signals because of the problems in Georgia?

Now that I call a conspiracy theory... :)
My GPS has acted strangely, but in far smaller proportions... some 100 m or about so. Mind you, I'm using iGO...

[deechte]

My colleague's Polaris has shown the same behaviour, sudden displacements. Most of the time between 10 and 100 km.

[kremnos]

Mine does that too. I'm normally doing 250 mph in the irish sea!! Soft reset fixes it though.