the indot cors indiana gis conference february 19 2008
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The INDOT CORS Indiana GIS Conference February 19, 2008. By William A. Schmidt, PE, LS Manager of Aerial Engineering, INDOT Thomas A. Mahon, PE, LS Survey Group Manager, Woolpert Inc. Continuously Operating Reference Station Operated by Others Operates continuously

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the indot cors indiana gis conference february 19 2008

The INDOT CORSIndiana GIS ConferenceFebruary 19, 2008

By

William A. Schmidt, PE, LS

Manager of Aerial Engineering, INDOT

Thomas A. Mahon, PE, LS

Survey Group Manager, Woolpert Inc

what is a cors
Continuously Operating Reference Station

Operated by Others

Operates continuously

Data available for Post-Processing

Data may be available in real-time

What is a CORS?
advantages of a cors
Single coordinate system

Uniform precision

No need to setup base stations

Avoids base station radio issues

Frees up base stations as rovers

Increases productivity

Ease of use

Advantages of a CORS
station locations
Primary Station Locations

Indiana Department of Transportation Facilities

Other State Facilities

Secondary Station Locations

Other State Facilities

Higher Education (Possibly)

Private Consultants (Unlikely)

Station Locations
network administration
INDOT Funded Primary Network and it is under construction

Indiana Office of Technology (IOT) to Maintain Servers

Servers dedicated to INDOT CORS

Network Operations and Maintenance by INDOT Aerial Engineering (John Kurtz, LS)

Network Administration
budgets
Initial Capital Costs

Primary Network:  $400,000

Secondary Network:  $700,000

Annual Operating Budget: to be determined

Hardware and Software Upgrades

Additional User Licenses (no charge)

Network Administration (IOT fees)

Budgets
schedule
Procurement Bids – March 2007

Bids Received – April 2007

Bid Awarded – April 2007

Begin Primary Installations – November 2007

Complete Primary Installation, including operational network – Anticipated Summer of 2008

Begin Secondary Installation – Anticipated Spring 2008

Complete Secondary Installation – Projected by the end of 2008

Schedule
cors access
Post-Processing

Free & Available from a web location to be determined

Real-Time Kinematic

Controlled by user name and password

Up to 300 concurrent users w/o paying for additional access licenses

May develop a fee-based system of access to support maintenance, upgrades, and IOT fees

CORS Access
cors access cont d
Real-Time Differential

Coast Guard Beacons (10 m h 68%)

WAAS FAA (7 m h&v 95%)

Third Party Vendors Omnistar (submeter 95%)

INDOT CORS (subdecimeter 95%)

Potential fee schedule similar to RTK

CORS Access (Cont’d)
cors challenge cont d
Solution to the Vertical

Height Modernization

Better Geoid Model Development

Densification of Benchmarks throughout Indiana

Elevations on existing HARN Monuments

Elevations on CORS Stations

More Gravity Readings

CORS Challenge (Cont’d)
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