[OSM-talk] Motion sensors for navigation

[David Earl]

On 23/03/2010 12:21, John Smith wrote:
> On 23 March 2010 21:56, David Earl<david at frankieandshadow.com>  wrote:
>> I wonder whether they might be interested in offering us some units for
>> testing?
>
> Using inertial navigation the accuracy deteriorates considerably over time.
>
> http://en.wikipedia.org/wiki/Inertial_navigation

Yes, obviously. The problems we have are exactly the ones they are 
trying to solve though - urban canyons and tunnels - where we lose the 
GPS accuracy for a short while. I don't think they're suggesting they 
are a substitute for GPS, just to augment it where GPS can't reach. If 
they are looking at military applications, the accuracy has to be an 
order of magnitude better than we would need as is their GPS.

David