Technical

We have provided technical resources under the headings below. This section is under development and will be added to over the next few weeks.

Geodetic infrastructure

1. Coordinate Reference Systems

‘The Irish Grid’

‘A New Coordinate Reference System for Ireland’ (pdf)

Grid References


2. Vertical datums in Ireland

Mean Sea Level Belfast


3. Traditional Survey Control - trigs & BM’s - (under development)


4. GPS Survey Control (under development)

Active GPS data

Passive GPS Network

Local GPS control Service


5. Transformations

Link to ‘Making Maps Compatible with GPS’ (pdf)

Geoid Model OSGM02 + link to paper (pdf)

GridInquest (under development)


6. Magnetic Variation