Prius built-in nav system has internal INU with accelerometer, not just GPS. Also, Prius native tech _does_ have access to speedometer info. You can get the same data with some external toys of your own.
* Drew Van Zandt Artisan's Asylum Craft Lead, Electronics & Robotics Cam # US2010035593 (M:Liam Hopkins R: Bastian Rotgeld) Domain Coordinator, MA-003-D. Masquerade aVST * On Thu, Feb 23, 2012 at 6:11 PM, Tom Metro <[email protected]>wrote: > Kurt L Keville wrote: > > ...how the Prius seemed to know where you were going after we entered > > the Ted Williams tunnel. I assume it had a pretty good INU built-in... > > Inertial Navigation Unit? > > So you are saying it kept you on the virtual road despite having lost > the GPS signal? > > > > ...and had access to the speedometer... > > Any evidence to suggest it didn't just average the speed observed in the > moments before entering the tunnel and extrapolate from that? > > The interesting test would be to drive into the tunnel and stop and see > if your virtual position keeps moving. > > In all probability the GPS system is completely isolated from the car's > main computer that has access to the speedometer data, but that's just > speculation. > > > > is there a free Skyhook-like system model? > > Yes, supposedly Google has one. It may only be free for Android apps. > > > > ... I was looking at projects like > > http://rvsn.csail.mit.edu/location/ > > That talks about using Wi-Fi triangulation for indoor navigation. > > This is the same stuff they're doing the the latest Google Maps app, > right? Where you can navigate inside malls and stores. > > -Tom > > _______________________________________________ > Hardwarehacking mailing list > [email protected] > http://lists.blu.org/mailman/listinfo/hardwarehacking >
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