national spatial referencing infrastructure colin bray, chief executive officer

Permanent Committee on Cadastre, Irish Presidency 20 June 2013

National Spatial Referencing Infrastructure


Colin Bray, Chief Executive Officer

Chief Survey Officer

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



• 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

OSi – The Irish National Mapping Agency



OSi Data & Services

Small Scale Data

1:210,000 Holiday1:450,000 Ireland1:600,000 Ireland

Medium Scale Data

1:10-15,000 Digi-City1:10,000 Digi- Town1:50,000 Discovery

Large Scale Data

1:1,000, 1:2,500 and 1:5,000 PLACE Maps

National Imagery

1m per pixel ortho-photography

LiDAR Data

Digital Terrain ModelDigital Surface Model

Boundary Data

CountyED

TownlandsSmall Area

City & Town Imagery

25cm per pixel ortho-photography

Updated every 1, 3 and 5 years

Cities &Towns

Services

Online ShopPublic Viewer

Environmental ReportsWeb Services



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



National Surveying Infrastructure



Passive GPS Network

‘IRENET95’ Coordinate Reference Frame

• 173 stations

• Initial realisation of GPS in Ireland

• To international standards

• ETRF89 referenced (GRS80)

• Positions computed to EUREFZero Order Class B standard

• Subsequent Campaigns coordinated

active stations

• IRENET02

• OS IE/UK09

D106

D108 D109

D112

D111D113

D115

D128

D101

D100Z009

D097 D098

D103

D110

D099

D104

D117

D118

D129

D119

D122

D123

D121

D124

D126

D125D171D168D169

D166

D170

D093

D091 D092

D095D096

D089

D120

D159

D162

D164

D161

D084D087 D088

D131D157

D154D152 D153

D158

D074 D075

D079D080

D076

D081

D086

Z006

D082

D090D141

D173

D140

D142

Z007D148

D151D147

D150

D067

D066

D072

Z005D068

D073D070

D071

D135

D137

D062

D058

D063 D064D065

D048

D134D133

D055

D059 D060 D046

D030

D031

D044

D032

D047

D043D042

D041

D034

D052

D035

D040

D053

D054

D038

D013D028

D014

D027D026

D016

D017 D018

D023 D022

Z002

D021

D020

D037

D001

D002D003

D011

Z001

D004

D009

D005

D008

D006

D107

D114

D116

D105

D102

D127 D130Z010

D165

D172

Z011 D167

D094 D132

D160

D163

D083

Z008

D085D155

D156

D078

D077

D143

D149

D144D145D146

D069D136

D138D139

D061D050

Z004D051

D029

D045Z003

D049

D033D036

D039

D015

D025D024

D019

D056

D012 D010D007 MADR

WETTKOSG

ONSA

ZIMMHERS

Z001

Z002Z003Z004Z005Z006

Z007Z008

Z009Z010Z011Z097Z096Z095

Z099

Z012



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 MappingITM – GPS Compatible Mapping

ITM

Reference Ellipsoid

GRS80

Central Meridian

8° West

Scale on CM

0.999 820

True Origin ø λ

53° 30' North 8° West

False Origin

600 000 West 750 000 South



National Spatial Information Platform



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



• 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










• Sites & Locals


– Concepts

• Way• Artificial• Vegetation• Exposed• Water

Seamless, topologically consistentblanket of polygons










• Sites & Locals


– Concepts










• Sites & Locals


– Concepts

GUID - Globally Unique IDentifier










• Sites & Locals


– Concepts

• 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










• Sites & Locals


– Concepts

Full connectivity on Roads, Rail and Rivers










• Sites & Locals


– Concepts










• Sites & Locals


– Concepts

ZOrder = -1










• Sites & Locals


– Concepts

• 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










• Sites & Locals


– Concepts



• 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)

– Benefits & Opportunities



• 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

Future Developments



Thank You

national spatial referencing infrastructure colin bray, chief executive officer

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