[postgis-users] Determine latitude/longitude of a point giveninitial latitude/longitude, bearing and distance on a spheroid.

[Jorge Gustavo Rocha]

Luke,

Maybe you can find useful information on:
http://trac.osgeo.org/proj/wiki/GeodesicCalculations

Regards,

Jorge

-- 
Jorge Gustavo Rocha
Departamento de Informática
Universidade do Minho
4710-057 Braga
Tel: 253604430 (Geral), 253604479 (Gabinete)
Fax: 253604471
Móvel: 910333888
        


Ter, 2010-11-09 às 00:22 +0930, Luke Wilmen escreveu:
> G'day all,
> Long time reader, first time poster. Recently I have been developing a
> project that is requiring a point to be translated along a great
> circle path by a given distance (metres) and initial bearing. I have
> already implemented functions that do this with normal spherical
> calculations based upon an average radius for the Earth. These
> spherical calculations work fine when you are close to the equator
> however the accuracy is outside the tolerances for our project as you
> move further towards the poles (points drift by upwards of 10m - 20m).
> 
> 
> After pouring over the Internet and this mailing list I have been
> unable to find any solution for achieving these calculations on a
> spheroid/ellipsoid and am wondering if anyone else has had any success
> in this area or would be able to offer some advice?
> 
> 
> Regards,
> Luke.
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