National GPS Network information: a guide to coordinate systems in Great Britain: glossary

A guide to coordinate systems in Great Britain

Glossary

The following list of technical terms shows the section of this booklet where each term is explained or first used:

Airy 1830 ellipsoid	2.2	ITRS	4.2
biaxial ellipsoid	2.2	latitude	3.1
datum	3.2	longitude	3.1
Cartesian coordinates	3.1	map projection	7
differential GPS	4.2	mean sea level	3.1
DORIS	4.2	meridian	3.1
ED50	1.2	Molodensky transformation	6.2
ellipsoid	2.2	National Grid	3.1
ellipsoid height	3.1	Ordnance Datum Newlyn	3.1
ephemerides	4.2	orthometric height	3.1
epoch	4.2	OSGB36	5.2
ETRF89	4.2	OSGM02	6.4
ETRS89	4.2	OSTN02	6.3
fiducial analysis	4.2	prime meridian	3.1
geodesy	1.1	realisation	3.3
geodetic datum	3.2	satellite positioning	3.3
geoid	2.3	SINEX	4.2
geoid height	3.1	SLR	4.2
GPS	1.1	terrestrial	1.1
gravimetry	2.3	terrestrial reference frame	3.3
GRS80	2.2	terrestrial reference system	3.2
Helmert transformation	6.2	transformation	6.1
IERS	4.2	VLBI	4.2
IGS	4.2	WGS84	4.1
ITRF	4.2

Phone (Lo-call):	08456 05 05 05 Helpline 08456 050504 Welsh Language Helpline
Fax:	023 8079 2615
E-mail:	enquiries@ordnancesurvey.co.uk
WWW:	http://www.ordnancesurvey.co.uk
Post:	Ordnance Survey Customer Contact Centre Romsey Road SOUTHAMPTON SO16 4GU

Ordnance Survey, the OS Symbol, OSGM02 and OSGB36 are registered trade marks and OSTN97
is a trade mark of Ordnance Survey, the national mapping agency of Great Britain.

Microsoft is a registered trademark of Microsoft Corp.

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-Version 3.0-