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Height Modernization Activities in Indiana (Geo Project #6)

Height Modernization Activities in Indiana (Geo Project #6). Great Lakes Region Height Modernization Meeting September 24-25, 2007 Madison, Wisconsin Thomas Mahon , Chairman ISPLS/IGIC Woolpert Inc Boudewijn van Gelder ,

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Height Modernization Activities in Indiana (Geo Project #6)

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  1. Height Modernization Activities in Indiana (Geo Project #6) Great Lakes Region Height Modernization Meeting September 24-25, 2007 Madison, Wisconsin Thomas Mahon, Chairman ISPLS/IGIC Woolpert Inc Boudewijn van Gelder, ISGA / Office of the Indiana State Geodetic Advisor (OISGA) - Purdue University

  2. SIX INDIANA GEO PROJECTS Until 1992 Indiana Geodetic Infrastructure Relative Accuracy 1:100,000 Incapable of Accommodating 1 ppm GPS Surveys • 1997: High Accuracy Reference Network: 1st phase • 1998: High Accuracy Reference Network: 2nd phase • 2003: High Accuracy Reference Network: 3rd phase • 2005/06: Statewide Orthophotography Project • 2007/09: Statewide Active CORS • 2008/??: Height Modernization Project

  3. SIX INDIANA GEO PROJECTS • 1997: High Accuracy Reference Network: 1st phase: total: 126 points • 1998: High Accuracy Reference Network: 2nd phase: 25 surveyed, 3 resurveyed; total: 146 points • 2003: High Accuracy Reference Network: 3rd phase: 71 surveyed, 21 resurveyed; total: 196 points • 2005/06: Statewide Orthophotography Project: 92 counties: 79 1 foot resolution, 13 counties 6 inch resolution • 2007/09: Statewide Active CORS: 19 Primary stations, plus IUCO, incl. 50 HARN stations (Active CORS $1.2M funded by INDOT, estimated: $1.14M First Phase Height Mod) • 2008/10: Height Modernization Project: 19+200+xxx benchmarks

  4. Phases Indiana Height Mod Project • Report ISPLS/IGIC Committee • Identifying Phases • Lobbying the IN beneficiaries • Securing funding • Cooperation with NGS and Coordination with Midwest States

  5. Phases Indiana Height Mod Project • Phase I: Height Mod at IN’s Active CORS (incl. 50 HARN stations) • 19 stations • Blue Booked Leveling to 19 sites • Gravity Observations @ 19 sites • Estimated Cost $1.14M (incl. 50 HARN stations) • Phase II: Height Mod at INDOT Secondary Active CORS stations and IN’s HARN • <150 (200-50) stations • Blue Booked Leveling to <150 sites • Estimated cost $ • Phase III: Height Mod densification in IN • Bringing Height Mod to Third Parties Active CORS • xxx stations • Additional gravity

  6. Height Modernization in Indiana • Questions?

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