The INDOT CORS 2007 Indiana GIS ConferenceMarch 13, 2007By William A. Schmidt, PE, LSManager of Aerial Engineering, INDOTThomas A. Mahon, PE, LSSurvey Group Manager, Woolpert Inc
What is a CORS?Continuously Operating Reference StationOperated by Others Operates continuouslyData available for Post-ProcessingData may be available in real-time
Advantages of a CORSSingle coordinate systemUniform precisionNo need to setup base stationsAvoids base station radio issuesFrees up base stations as roversIncreases productivityEase of use
Existing CORSNGS
Existing CORS (contd)Seiler Instruments
INDOTs Primary Network17 New Stations plus Bloomington (IUCO)
Typical Installation
Initial Installations
Primary Monumentation
Primary Monumentation (Contd)
Primary Monumentation (Contd)
Secondary Monumentation
Station SponsorsPrimary StationsIndiana Department of TransportationSecondary StationsOther State AgenciesMunicipalities/Counties (Possibly)Higher Education (Possibly)Private Contractors (Not at this time)
Network AdministrationINDOT to Fund Primary NetworkIndiana Office of Technology (IOT) to Maintain ServersServers dedicated to INDOT CORS
BudgetsInitial Capital CostsPrimary Network: $400,000Secondary Network: $800,000
Annual Operating Budget: to be determinedHardware and Software UpgradesAdditional User LicensesNetwork Administration
ScheduleProcurement Bids March 2007Bids Received April 2007Bid Awarded April 2007Begin Primary Installations May 2007Complete Primary Installation, including operational network December 2007Begin Secondary Installation August 2007Complete Secondary Installation - TBD
CORS AccessPost-ProcessingFree & Available thru www, location to be determinedReal-Time KinematicControlled by user name and passwordUp to 250 concurrent users w/o paying for additional access licensesMay develop a fee-based system of access to support maintenance and upgrades
CORS Access (Contd)Real-Time DifferentialCoast 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 (Contd)
CORS Access (Contd)
INDOT CORSQuestions?