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NCGS: Positioning NC today and for the future!
North Carolina Geodetic Survey
Maintenance of a CORS/RTN infrastructure
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CORS installation components
• Planningo NGS guidelineso Hardwareo Monumentationo Softwareo Communication
• Installationo Documentationo Submittal to NGS
Guidelines for New and Existing Continuously
Operating Reference Stations (CORS)
www.ngs.noaa.gov/PUBS_LIB/CORS_guidelines.pdf
National Geodetic Survey
National Ocean Survey, NOAA
Silver Spring, MD 20910
January 2013
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CORS receiver maintenance
• GNSS receivero Uninterruptible Power Supply
(UPS)− Battery maintenance (keep
maintenance log)
o Receiver location− Protect cable connections− Select a location that is away from
the main traffic area of the room− Near power source− Secure cables
o Document firmware updates− Inform NGS if site is a National
CORS
o Surge protection− Properly grounded
o Display contact information
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CORS antenna maintenance
• GNSS antennao Keep antenna surface cleano Confirm orientation of
antenna o Monitor condition of radome
(if installed)o Lighting protection
− Grounded properly− Cable connections protected
from rain/snow
o Antenna cable− Connections (sealed properly)− Check for sun damage− Routing
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CORS hardware maintenance
• Hardware maintenanceo Monumentation/mounting
− Damage from elements− Indications of tampering with
mounting device
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Site maintenance
• Any new obstructionso Buildingso Towerso Fences
• Any new signal transmitters
• Stabilityo Any construction activity near CORS
• Update photos (submit to NGS if the site is a National CORS)
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Monumentation maintenance
• Ground monumentationo Check for:
− Damage− Parking or traffic patterns− Indication of new construction near site
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Monumentation (building mount)
• Building mounto Any damage to fastenerso Any damage from rain/snowo Evidence of tampering
• Tools required for maintenance
o Lift trucko Ladder
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CORS administration
• IT security• Latencyo Bandwidtho Transmission mediumo Router and switch performanceo Firewallo Wireless network voice/data
traffic
• Serverso Ageo Capacityo Maintenance up to date
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Questions?
Gary W. Thompson, PLSo Office: 919-733-3836o Direct:919-948-7844o Email: [email protected]