I would'nt be surprised if they are incorporating accelerometer readings
into their extrapolation algorithm.
On Monday, August 6, 2012 9:47:41 AM UTC-4, Jef De Busser wrote:
> I can see how extrapolating would yield good results if you have a small
> delay between reported position & real posit
I can see how extrapolating would yield good results if you have a small
delay between reported position & real position, e.g. the 1s update rate
of most GPS receivers.
What I can't see however, is how you could make that work with larger
delays, especially for large accelerations.
Say for exa
Hi,
Probably not what you are after, but you could also use an external
bluetooth GPS device, some of these devices provide 10hz output.
Regards
On Thursday, August 2, 2012 12:18:33 AM UTC+10, bushido wrote:
>
> Hi all,
>
> I'm writing an application for android for which I need good position
Don't forget, Google Navigation is vector based. It can easily perform a
"snap to road" trick to make you think it is more accurate. The Maps API
only has raster maps and thus is unable to cheat on the position accuracy.
On Friday, August 3, 2012 4:36:01 PM UTC-4, bob wrote:
>
> It may use ext
It may use extrapolation but not necessarily based on the route.
I would think it could easily be based on the estimated velocity of the
vehicle, the last known position and the time since the last known position.
On Friday, August 3, 2012 1:47:15 PM UTC-5, Nadeem Hasan wrote:
>
> That woul
On Friday, August 3, 2012 1:47:15 PM UTC-5, Nadeem Hasan wrote:
>
> That would be extrapolation.
>
Oopsie :-D
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That would be extrapolation. And that is actually the exact reason why the
GPS lags on exits if they are off-route because it has extrapolated your
position based on your route till the next actual GPS location update
arrives. I have seen this behaviour with my Garmin device too when I decide
n
In addition to what I said:
Google Navigation of course knows beforehand where to go so it can happily
make strong assumptions about the car's position on the map. My observation
of Google Navigation being off only holds true when you are leaving the
planned route. Breaking the app's expectatio
I'd go for interpolation and take the current average speed and the
"structure" of the streets into account. That of course only works when you
have something like a graph / vector representation of the streets and know
how they are connected and what orientation they have.
It is also pretty co
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