Outline Background Processes & Initiatives Moving Forward - - PDF document

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Outline Background Processes & Initiatives Moving Forward - - PDF document

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Faatasi Malologa, Dolores Leneuoti Faatasi Malologa, Dolores Leneuoti Lands & Survey Dept Tuvalu Lands & Survey Dept Tuvalu Andrick Lal & Team Andrick Lal & Team Geodetic Unit - SPC Geodetic Unit - SPC 29th November,

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Faatasi Malologa, Dolores Leneuoti Lands & Survey Dept – Tuvalu Andrick Lal & Team Geodetic Unit - SPC Faatasi Malologa, Dolores Leneuoti Lands & Survey Dept – Tuvalu Andrick Lal & Team Geodetic Unit - SPC

29th November, 2016

Outline

Background Processes & Initiatives Moving Forward Conclusion

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Tuvalu I slands

  • Land - 26 sq km
  • EEZ - 900,000 sq km
  • Population – 10,000
  • Capital – 6,000

Tuvalu Land I nformation System

✘ ✘ ✘ ✔ ✘ ✘ ✘

Tuvalu National Strategy for Sustainable Development 2016 to 2020 Tuvalu - UN Resolution A69/L.53 Align to Global Geodetic Reference System that underpins fundamental geospatial systems and surveying applications ‘ONE’ international reference system Survey infrastructure Spatial data infrastructure & Information Capacity development

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I nstitutional Arrangements - Tuvalu Geodetic Reference Frame(TVGRF) Topographic Maps of Tuvalu

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TV Hydrographic Charts TV Hydrographic Charts

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Tuvalu Satellite I mages

IKONOS QUICKBIRD

Tuvalu Cadastral Maps – 1980

All islands surveyed & mapped Cadastre Legislated 2005 TV Local Grids: WGS72 All data scanned, digitized Stored as Raster & Vector in TUVLIS Need to display data over satellite backdrop; more realistic Upgrade of TVGRF to WGS84

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Cadastre in TUVLI S TUVLIS Infrastructure

► Mapserver in Govt Server ► Access by Department of Lands & Survey

  • nly

► Database: Display of TUVLIS Data ► Data: Island Data (Digital)

  • Aerial photos, Bathymetry, Cadastre,

Topo.

  • Geo- reference maps on Local Grids
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Geodetic I nfrastructure - Tuvalu

ftp:/ / ftp.ga.gov.au/ geodesy-outgoing/ gnss/ data/ http:/ / auscors.ga.gov.au/ status/ http:/ / www.ga.gov.au/ scientific-topics/ positioning-navigation/ geodesy/ gnss-networks

PSLMP Monitoring Surveys - Tuvalu

  • 1 x permanent tide gauge, measuring local sea level
  • 1 x Constant GNSS station, measuring local earth movement in an

absolute coordinate system

  • Regular levelling survey between the tide gauge and CGNSS station

allow absolute determination of the vertical height of the tide gauges that measure sea level

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Cadastre and Satellite I magery

Shift in local grid & WGS84

Cadastre and Satellite I magery

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TV Local Grid System to WGS84 (Shift)

Vaitupu Spheroid: International Projection: Transverse Mercator Grid: Vaitupu Local Grid Semi Major Axis (a): 6378388.00 Eccentricity (e2): 0.00672267002 Scale Factor: 1.00 Reciprocal of Flattening (1/f): 297.000 Latitude of Origin: 0°00' (Equator) Longitude of Central Meridian: 178° 41' 00.0000" E False Easting: 10,000.00m False Northing: 1,000,000.00m Datum: Vaitupu ∆X = +193m ∆Y = +61m ∆Z = +201m Nukufetau Spheroid: International Projection: Transverse Mercator Grid: Nukufetau Local Grid Semi Major Axis (a): 6378388.00 Eccentricity (e2): 0.00672267002 Scale Factor: 1.00 Reciprocal of Flattening (1/f): 297.000 Latitude of Origin: 0°00' (Equator) Longitude of Central Meridian: 178° 22' 00.0000" E False Easting: 40,000.00m False Northing: 6,000,000.00m Datum: Nukufetau ∆X = +200m ∆Y = -83m ∆Z = +96m

http:/ / www.asprs.org/ a/ resources/ grids/ 12-2001-tuvalu.pdf

Geodetic Surveys of Tuvalu I slands (Phase 1)

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Geodetic Survey Team Transportation

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Reconnaissance Surveys - TVGRF Geodetic Control Surveys – Nukufetau

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RTK GNSS Surveys RTK GNSS Surveys – Boundary Definition

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RTK GNSS Surveys – Reference I mage Points Tide Gauge I nstallations & Watch

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Geodetic Surveys and Google Earth I mageries Power of Quality Positioning & Spatial Information

  • Data Quality

(accuracy XYZ mm, image resolution, real- time – Google Earth display)

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Future Initiatives

► Phase 2 – August 2017 Continue TVGRF

(Control survey, tide gauge – Vertical datum~MSL, satellite/UAV image correction, cadastral survey GNSS)

► Upgrade of survey equipment & TUVLIS ► Modernize GRF; Real-time display of cadastre,

and other geospatial data

► Data sharing with other stakeholders

Conlusion

► Political support – National Strategic Plan

► Technical support from SPC & other professional

bodies; GA, FIG, UN-GGIM, PGSC on GRF, Geospatial Development & Management

► Partnership & Support from P-GIS/RS User Group ► Modernize & upgrade of GRF and geospatial

infrastructure in PICs

► Bringing positioning & geospatial technology to

support sustainable developments in PICs in social, economic & environment

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Fakafetai Lasi