Dead Reckoning for GPS Software?
Does any current GPS software support dead reckoning? Most of the installed nav units support this...but nobody seems to have PC Based software that'll do it.
For those of you who don't know what i'm talking about, dead reckoning bases it's location on the GPS, then, compares GPS to readings from the car to always know where it is, so if the GPS dissapears, the car can continue navigating. Usually this requires a gryo to sense turning (could use an accelerometer), a tap off the car's speed sensor wire, and a tap off the reverse wire (so it knows it's going backwards). My factory GPS had this, and i'm kinda missing it with the amount of overpasses and trees around here.
I'd specifically be interested in something like this for iGuidance. There's a thread in the Newbie section that has a 2-direction accelerometer that could be used for it..which would be awesome.
Any ideas? Or am I dreaming too far ahead?