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It's worth mentioning that car GPS navigation explicitly calculates how plausible each GPS reading is, based on a combination of other position signals and basi
by pjscott 9y ago
It's worth mentioning that car GPS navigation explicitly calculates how plausible each GPS reading is, based on a combination of other position signals and basic physics modeling, and discounts anything that sounds too crazy. If it didn't, simple things like tall buildings would be huge problems.
- kevin_thibedeau 9y agoTall buildings are huge problems for GPS. Multipath reflections will inflate the uncertainty and can put you some distance from your true location.
- pjscott 9y agoYes, they're a serious problem. What I'm saying is that they'd be a much bigger problem for GPS-based car navigation if there weren't logic in place to combine the GPS info with accelerometers and gyroscopes.