Outline Background Processes & Initiatives Moving Forward - PDF document

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, 2016 Outline � Background � Processes & Initiatives � Moving Forward � Conclusion 1

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 2

I nstitutional Arrangements - Tuvalu Geodetic Reference Frame(TVGRF) Topographic Maps of Tuvalu 3

TV Hydrographic Charts TV Hydrographic Charts 4

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 5

Cadastre in TUVLI S TUVLIS Infrastructure ► Mapserver in Govt Server ► Access by Department of Lands & Survey only ► Database: Display of TUVLIS Data ► Data: Island Data (Digital) - Aerial photos, Bathymetry, Cadastre, Topo. - Geo- reference maps on Local Grids 6

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 7

Cadastre and Satellite I magery � Shift in local grid & WGS84 Cadastre and Satellite I magery 8

TV Local Grid System to WGS84 (Shift) Vaitupu Nukufetau Spheroid: International Spheroid: International Projection: Transverse Mercator Projection: Transverse Mercator Grid: Vaitupu Local Grid Grid: Nukufetau Local Grid Semi Major Axis (a): 6378388.00 Semi Major Axis (a): 6378388.00 Eccentricity (e 2 ): 0.00672267002 Eccentricity (e 2 ): 0.00672267002 Scale Factor: 1.00 Scale Factor: 1.00 Reciprocal of Flattening (1/f): 297.000 Reciprocal of Flattening (1/f): 297.000 Latitude of Origin: 0 ° 00' (Equator) Latitude of Origin: 0 ° 00' (Equator) Longitude of Central Meridian: Longitude of Central Meridian: 178 ° 41' 00.0000" E 178 ° 22' 00.0000" E False Easting: 10,000.00m False Easting: 40,000.00m False Northing: 1,000,000.00m False Northing: 6,000,000.00m Datum: Vaitupu Datum: Nukufetau ∆ X = +193m ∆ X = +200m ∆ Y = +61m ∆ Y = -83m ∆ Z = +201m ∆ Z = +96m http:/ / www.asprs.org/ a/ resources/ grids/ 12-2001-tuvalu.pdf Geodetic Surveys of Tuvalu I slands (Phase 1) 9

Geodetic Survey Team Transportation 10

Reconnaissance Surveys - TVGRF Geodetic Control Surveys – Nukufetau 11

RTK GNSS Surveys RTK GNSS Surveys – Boundary Definition 12

RTK GNSS Surveys – Reference I mage Points Tide Gauge I nstallations & Watch 13

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) 14

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 15

Fakafetai Lasi 16