[Proj] The world of ECEF aka geocentric coordinates

Noel Zinn ndzinn at comcast.net
Sat Jan 31 11:24:25 EST 2009


See Section 2.2 of Guidance Note 7-2 ("Coordinate Conversions and
Transformations including Formulas") available at www.epsg.org.

-----Original Message-----
From: proj-bounces at lists.maptools.org
[mailto:proj-bounces at lists.maptools.org] On Behalf Of Gerald I. Evenden
Sent: Saturday, January 31, 2009 8:59 AM
To: PROJ.4 and general Projections Discussions
Subject: Re: [Proj] The world of ECEF aka geocentric coordinates

On Saturday 31 January 2009 9:35:02 am Karney, Charles wrote:
> > I personally find the Wiki stuff useless and misleading.  The proper
	...
> On ECEF vs Geocentric: I welcome a return to original terminology
> instead of having a multitude of names for the same thing.  I have the
> Google version of Bomford (1952 edition).  Does he define "Geocentric
> Coordinate System"?  (I couldn't find it there.)  If not, is there
> another authoritative reference?

In the 3rd, 1971, edition see page 593 where geocentric is discussed.  The 
conversion of geocentric to geodetic is simply dismissed as an iterative 
process.

-- 
The whole religious complexion of the modern world is due
to the absence from Jerusalem of a lunatic asylum.
-- Havelock Ellis (1859-1939) British psychologist
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