NCGS Positioning NC today and for the future

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NCGS: Positioning NC today and for the future! North Carolina Geodetic Survey Maintenance of

NCGS: Positioning NC today and for the future! North Carolina Geodetic Survey Maintenance of a CORS/RTN infrastructure

CORS installation components • Planning o NGS guidelines o Hardware Monumentation Software Communication o

CORS installation components • Planning o NGS guidelines o Hardware Monumentation Software Communication o o o • Installation o o Documentation Submittal to NGS Guidelines for New and Existing Continuously Operating Reference Stations (CORS) www. ngs. noaa. gov/PUBS_LIB/CORS_guidelines. p df National Geodetic Survey National Ocean Survey, NOAA Silver Spring, MD 20910 January 2013

CORS receiver maintenance • GNSS receiver o Uninterruptible Power Supply (UPS) − o o

CORS receiver maintenance • GNSS receiver o Uninterruptible Power Supply (UPS) − o 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 Document firmware updates − o Inform NGS if site is a National CORS Surge protection − o Battery maintenance (keep maintenance log) Properly grounded Display contact information

CORS antenna maintenance • GNSS antenna o o o Keep antenna surface clean Confirm

CORS antenna maintenance • GNSS antenna o o o Keep antenna surface clean Confirm orientation of antenna Monitor condition of radome (if installed) Lighting protection − Grounded properly − Cable connections protected from rain/snow Antenna cable − Connections (sealed properly) − Check for sun damage − Routing

CORS hardware maintenance • Hardware maintenance o Monumentation/mounting − Damage from elements − Indications

CORS hardware maintenance • Hardware maintenance o Monumentation/mounting − Damage from elements − Indications of tampering with mounting device

Site maintenance • Any new obstructions o o o • • Any new signal

Site maintenance • Any new obstructions o o o • • Any new signal transmitters Stability o • Buildings Towers Fences Any construction activity near CORS Update photos (submit to NGS if the site is a National CORS)

Monumentation maintenance • Ground monumentation o Check for: − Damage − Parking or traffic

Monumentation maintenance • Ground monumentation o Check for: − Damage − Parking or traffic patterns − Indication of new construction near site

Monumentation (building mount) • Building mount o o o • Any damage to fasteners

Monumentation (building mount) • Building mount o o o • Any damage to fasteners Any damage from rain/snow Evidence of tampering Tools required for maintenance o o Lift truck Ladder

CORS administration • • IT security Latency o o o • Bandwidth Transmission medium

CORS administration • • IT security Latency o o o • Bandwidth Transmission medium Router and switch performance Firewall Wireless network voice/data traffic Servers o o o Age Capacity Maintenance up to date

Questions? Gary W. Thompson, PLS o Office: 919 -733 -3836 o Direct: 919 -948

Questions? Gary W. Thompson, PLS o Office: 919 -733 -3836 o Direct: 919 -948 -7844 o Email: gary. thompson@ncdps. gov