[Proj] The world of ECEF aka geocentric coordinates
Clifford J Mugnier
cjmce at lsu.edu
Tue Feb 3 11:43:00 EST 2009
Local Space Rectangular (LSR) is the approximately 60-70 year old terminology used in computational photogrammetry.
Polyhedric (Polyeder in Dutch or German) is the 19th century terminology for the "projection." (Also known as the "Tampico Datum" from the 1920s or 1930s.)
C. Mugnier
LSU
________________________________
From: proj-bounces at lists.maptools.org on behalf of Karney, Charles
Sent: Tue 03-Feb-09 04:19
To: geraldi.evenden at gmail.com; PROJ.4 andgeneral Projections Discussions
Subject: Re: [Proj] The world of ECEF aka geocentric coordinates
While we're at it, what's the consensus for the terminology for the
Cartesian system with origin at z = 0 tangent to ellipsoid, z up, y
north? Choices so far:
local Cartesian
ENU
topocentric
It seems that topocentric is the best, and this doesn't tie you down to
Cartesian coordinates. Transforming to polar gives azimuth-elevation-
distance.
--
Charles Karney <ckarney at sarnoff.com>
Sarnoff Corporation, Princeton, NJ 08543-5300
URL: http://charles.karney.info <http://charles.karney.info/>
Tel: +1 609 734 2312
Fax: +1 609 734 2662
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