Differential GPS

Hi All, I don't know if it's something already experimented but I was wondering if it could be possible to implement some sort of differential GPS mechanism.

Basically if we could have two identical GPS, one airborne and the other positioned on a precisely know position and attached to the base station we could measure position error of the base station and transmit the error vector to the drone to be added to the on-board calculated position such enhancing accuracy.

Probably some technicality will have to be managed, for example we should lock the number of satellite to be considered on both units unless the two measure will not be comparable.

Does anyone has any experience about this? Is it something that makes sense?

Thank You very much,

             enrico

Tags: GPS, accuracy, differential, error, positioning, vector

Views: 375

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Permalink Reply by Jake Stew on August 18, 2012 at 11:53pm

It's been talked about recently.  You might search for "AGPS" to find the threads.

It's certainly a good idea, but I don't think anyone's working on it at the moment.  

Permalink Reply by Enrico Bazan on August 20, 2012 at 12:23pm

Hi Jake,

         I tought that A-GPS meant Assited GPS, i.e. GPS + GPRS/UMTS.

I'll look at the thread to find out if I can giva a small contribution.

Thanks,

         enrico

Permalink Reply by Jake Stew on August 20, 2012 at 1:24pm

I realized it might be pretty hard to find the thread even though it's pretty recent.  There's some discussion on various potential high accuracy GPS methods here.  It's the best and most recent thread on the topic AFAIK.  Don't be afraid to bump the thread.

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