Re: GPS

[Gary E. Miller]

Yo Anton!

On Wed, 7 Sep 2022 07:29:27 +0200
Anton Strydom <agstrydom@gmail.com> wrote:

> The surveyor is my younger brother

Family is good.

> The device was developed because of him and a comment from him that
> it is impossible for a GPS to be sub meter accurate without
> assistance.

Depends.
 
> Well challenge accepted and the device was developed and is
> sub-decimeter accurate.

Facts not in evidence.  What is your 12 hour CEP(95)?  Being right 95
of the time is not good enough for car navigation.
 
> Suffice to say that the one element that finally determines the
> accuracy of position from any receiver is TIME.

Time is the only element the receiver has to start with.

> The arguments about what WGS84 etc are all irrelevant and purely
> academic and have nothing to do with the position the receiver
> provides me with.

So, 2 meters does not matter to you?  Or you only care about relative
positioning?

> As long as the coordinates the vehicle navigates from and to are in
> the same datum there is no problem

If you don't know which WGS84 datum your car is on, how do you know which
WGS84 datum your map is in?

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        gem@rellim.com  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

pgpPbfdYpPh0a.pgp
Description: OpenPGP digital signature