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National Spatial Referencing Infrastructure Colin Bray, Chief Executive Officer Chief Survey Officer Permanent Committee on Cadastre, Irish Presidency , 20 th June 2013. OSi – The Irish National Mapping Agency. Established in 1824 (189 years)

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National Spatial Referencing Infrastructure

Colin Bray, Chief Executive Officer

Chief Survey Officer

Permanent Committee on Cadastre, Irish Presidency , 20th June 2013


OSi – The Irish National Mapping Agency

  • Established in 1824 (189 years)

  • Established as a State Body in 2002 with responsibility for national

    • Large-scale topographic mapping

    • Cartographic mapping

    • Geodetic infrastructure

    • Statutory boundary maintenance

  • 245 staff

  • Head Office in Phoenix Park, Dublin with 6 Regional Offices

  • Create & maintain the definitive spatial reference information for the State

  • OSi, the Property Registration Authority & the Valuation Office to merge


National Imagery

Large Scale Data

Medium Scale Data

Small Scale Data

City & Town Imagery

LiDAR Data

1:210,000 Holiday

1:450,000 Ireland

1:600,000 Ireland

1m per pixel ortho-photography

1:1,000, 1:2,500 and

1:5,000 PLACE Maps

1:10-15,000 Digi-City

1:10,000 Digi- Town

1:50,000 Discovery

Services

Boundary Data

Digital Terrain Model

Digital Surface Model

25cm per pixel ortho-photography

County

ED

Townlands

Small Area

Online Shop

Public Viewer

Environmental Reports

Web Services

OSi Data & Services

Updated every 1, 3 and 5 years

Cities &

Towns


Data Collection Expertise

  • 150 / 245 staff involved in production activities (60%)

  • 30 / 245 professional teams of surveying staff (12%)

  • 20 / 245 staff in IT activities (8%)

  • Two leased aircraft/pilot with OSi crews

  • Information recorded on computer tablets and uploaded to database


Data Management Expertise

  • Digital data from 1824 - 2013

  • We manage 600 Terra Bytes of data, and our data holding is increasing by 50 Terra Bytes per annum.

  • European reference site for Oracle Spatial Technology

  • Data centers in Phoenix Park, Regional Offices and Amazon Cloud

  • Developed and maintain the INSPIRE technical infrastructure for Ireland



Z001

Z002

Z003

Z012

Z004

Z005

Z006

Z007

Z008

Z011

Z010

Z009

ONSA

Z097

Z096

Z095

KOSG

Z099

HERS

WETT

ZIMM

MADR

Passive GPS Network

‘IRENET95’ Coordinate Reference Frame

  • 173 stations

  • Initial realisation of GPS in Ireland

  • To international standards

  • ETRF89 referenced (GRS80)

  • Positions computed to EUREF

    Zero Order Class B standard

  • Subsequent Campaigns coordinated

    active stations

    • IRENET02

    • OS IE/UK09


OSi Active GNSS Network

  • 25 GNSS stations

  • GPS & GLONASS

  • ETRS realisation

  • OS IE/UK09 EUREF campaign

  • Free download service

  • Commercial real-time service


  • OSGM02 Geoid Model

  • Joint OSi, Land & Property Services Northern Ireland, OS Great Britain initiative

  • Converts GPS ellipsoidal heights to orthometric heights referenced to the tertiary levelling network (BM’s)

  • Accuracy of 4 to 6 cm for Ireland

  • OSGM10 to be released by end 2013

    • Additional gravity data

    • Additional orthometric heights


ITM – GPS Compatible Mapping



Real World Object Orientated data model

  • Seamless & scale independent

  • Non-proprietary

  • Rigorously based on industry standards

    • OGC Simple Feature Model, ISO19115, GDF Roads,

      ISO CityGML Level 2, GML & OGC compliant web services

  • Data Storage Model with attribution

  • OSi’s version of the real world, but extensible

  • Data consolidation project (single point of truth)

  • Project to replace a legacy cartographic data model

    • Data modelling project

    • Data reengineering project

    • Production system upgrade project

Location Framework for Ireland


– Concepts

  • Skin Of The Earth Objects

  • Superimposed Objects

  • Links objects using persistent ID’s

  • Form & Function object classification

  • Segmentation & Connectivity

  • GDF1 & GDF2 road modelling

  • Z-Order Property

  • Sites & Locals

  • 3D data storage (CityGML LOD2)


– Concepts

  • Skin Of The Earth Objects

  • Superimposed Objects

  • Links objects using persistent ID’s

  • Form & Function object classification

  • Segmentation & Connectivity

  • GDF1 & GDF2 road modelling

  • Z-Order Property

  • Sites & Locals

  • 3D data storage (CityGML LOD2)

  • Way

  • Artificial

  • Vegetation

  • Exposed

  • Water

Seamless, topologically consistent

blanket of polygons


– Concepts

  • Skin Of The Earth Objects

  • Superimposed Objects

  • Links objects using persistent ID’s

  • Form & Function object classification

  • Segmentation & Connectivity

  • GDF1 & GDF2 road modelling

  • Z-Order Property

  • Sites & Locals

  • 3D data storage (CityGML LOD2)


– Concepts

  • Skin Of The Earth Objects

  • Superimposed Objects

  • Links objects using persistent ID’s

  • Form & Function object classification

  • Segmentation & Connectivity

  • GDF1 & GDF2 road modelling

  • Z-Order Property

  • Sites & Locals

  • 3D data storage (CityGML LOD2)

GUID - Globally Unique IDentifier


– Concepts

  • Skin Of The Earth Objects

  • Superimposed Objects

  • Links objects using persistent ID’s

  • Form & Function object classification

  • Segmentation & Connectivity

  • GDF1 & GDF2 road modelling

  • Z-Order Property

  • Sites & Locals

  • 3D data storage (CityGML LOD2)

  • Form

    • Physical form of an object as it exists in the real world

    • i.e. Building, Pylon, Field, River, Lake

  • Function

    • ‘Use’ or ‘Purpose’ of an object in the real world

    • i.e. Residential, Army Barracks, Electricity Supply, Agricultural, Reservoir


– Concepts

  • Skin Of The Earth Objects

  • Superimposed Objects

  • Links objects using persistent ID’s

  • Form & Function object classification

  • Segmentation & Connectivity

  • GDF1 & GDF2 road modelling

  • Z-Order Property

  • Sites & Locals

  • 3D data storage (CityGML LOD2)

Full connectivity on Roads, Rail and Rivers


– Concepts

  • Skin Of The Earth Objects

  • Superimposed Objects

  • Links objects using persistent ID’s

  • Form & Function object classification

  • Segmentation & Connectivity

  • GDF1 & GDF2 road modelling

  • Z-Order Property

  • Sites & Locals

  • 3D data storage (CityGML LOD2)


– Concepts

  • Skin Of The Earth Objects

  • Superimposed Objects

  • Links objects using persistent ID’s

  • Form & Function object classification

  • Segmentation & Connectivity

  • GDF1 & GDF2 road modelling

  • Z-Order Property

  • Sites & Locals

  • 3D data storage (CityGML LOD2)

ZOrder = -1


– Concepts

  • Skin Of The Earth Objects

  • Superimposed Objects

  • Links objects using persistent ID’s

  • Form & Function object classification

  • Segmentation & Connectivity

  • GDF1 & GDF2 road modelling

  • Z-Order Property

  • Sites & Locals

  • 3D data storage (CityGML LOD2)

  • Sites

    • Points of interest with known boundaries

    • i.e. Hospitals, University, Golf Course

  • Locals

    • Fuzzy boundaries where the geographic entity is undefined or subject to interpretation

    • i.e. Mountain range, Bay, Town


– Concepts

  • Skin Of The Earth Objects

  • Superimposed Objects

  • Links objects using persistent ID’s

  • Form & Function object classification

  • Segmentation & Connectivity

  • GDF1 & GDF2 road modelling

  • Z-Order Property

  • Sites & Locals

  • 3D data storage (CityGML LOD2)


– Benefits & Opportunities

  • Provides Ireland with a consistent authoritative spatial referencing system for the integration and management of national spatial information.

    • Common RW objects, unique ID’s referencing, consistent geographic positioning

  • Prime2 is a foundation for a modern National Spatial Data Infrastructure.

  • Provides users with high quality high intelligence reference data in an easy to use industry standard data format.

  • The standards based intelligent data storage model enables the generation of products and services via data schemas designed for user requirements.

  • The Prime2 data model enables INSPIRE Directive compliance.

  • Provides solution developers and data integrators with a robust framework for integrating 3rd party data.

  • Enables OSi to develop enhanced Web Services (Web Feature Services)


Future Developments

  • Prime2 Provides Flexibility & Opportunities

    • Theme based data management

    • ‘Change Only’ data supply

    • Enhanced object intelligence

    • Extensible data model (surveying of new spatial information)

    • Supply schemas

    • Integration of high-resolution height model

    • Management / integration of 3rd party data

  • Merger of OSi, the Property Registration Authority and the Valuation Office



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