Droid Incredible GPS elevation inaccurate?

[hakoreh]

I am driving on the highway, it tells me to make turns or uturns on local streets that are below the highway. Therefore it's safe to assume it doesn't know I'm elevated? Any suggestions? anyone have this problem?

I've never noticed it before in 2 months using it

 

[anon(40376)]

GPS requires at least four satellites to obtain any type of elevation accuracy and this accuracy with dedicated consumer grade GPS devices is not that great. Now, the GPS in a phone is not dedicated to only GPS and therefore, the elevation accuracy is probably around +/- 100 feet.

Also, I have no idea how many channels most smart phone have, and the more the more accurate the system (more satellites mean greater accuracy). And, do smart phones use differential GPS? I don't know and can't find that out either. I do know some are WAAS compatible.


However, the problem sounds more like a mapping problem than an actual GPS problem. Software receives the GPS info, but it relies on the map programming to tell it that a road goes over, under or through an intersection.

I have seen some strange things happen on my Pioneer AVIC, which is more of a designed Navigation system than a smart phone.

I'm not saying it could not be the GPS inside the phone, but I would blame the Maping software program first.

 

[bclinger#IM]

You are lucky to be accurate within 100 feet. My car GPS misses it by about 75 feet. My Garmin Oregon 550T is within 15'. Amazing. Speed and distance wise, all 3 are exceedingly close.