Florida Permanent GPS Reference Network

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Florida Permanent GPS Reference Network R. Scott
Harris Florida Department of Transportation Tallah
assee, Florida
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The Anatomy of Our Network

• Station Details
• Planned ( 40)
• Installations prior to 8/04 (40)
• Current spacing at 45 mile radius
• Continuing densification to squeeze spacing down
  to 25 mile radius adding 30 stations.
• Recon (All)

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The Anatomy of Our Network

• Circuit Details
• TCP/IP
• 56/128/T1 Permanent Virtual Circuits on Frame
  Relay
• Near Real-Time (lt100ms)
• Secure
• Redundant

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The Anatomy of Our Network

• Network Operation Center
• Windows based real-time Control and Integrity
  Monitoring software for a large network of
  reference stations.
• Provides real-time statistics on GPS network
  performance and alarming for out of tolerance
  conditions.
• Allows archiving and distribution of data
• Hourly Zipped RINEX files

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The Anatomy of Our Network

• Control and Integrity Monitoring
• Real Time from Software
• Post Processed from Software
• NGS/FSL daily processing

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Primary Applications
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Airborne Kinematic Control
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Static GPS Campaigns
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• 1 second data
• 1 hour RINEX files
• 24/7
• www.myfloridagps.com
• RTK coming soon

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Additional Applications
Water Vapor Analysis
Structural Monitoring
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• Sunshine Skyway Bridge Tampa
• 5 receiver suite
• Other sensors being included
• Installed 6/03

• Dames Point Bridge Jacksonville
• 4 receiver suite
• Other sensors under consideration
• Installation 1/04

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Future Network Enhancements
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Future Network Enhancements Real Time Kinematic
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Real Time Kinematic
TALLAHASSEE 2 2042050.497 574577.331 213.08 0
hawks grnd 8 2038751.133 565881.29 228.571 0.035
hawks grnd 22 2038711.196 565487.17 228.958 0.036
hawks grnd 25 2038921.207 565596.37 227.428 0.036
hawks grnd 31 2038746.127 565647.963 228.884 0.038
hawks grnd 36 2038842.749 565723.573 228.259 0.038
hawks grnd 50 2038854.264 565744.804 224.27 0.038
hawks grnd 7 2038713.4 565850.507 228.596 0.038
hawks grnd 13 2038729.026 565890.606 232.102 0.039
hawks grnd 16 2038670.755 565839.287 230.835 0.04
hawks grnd 23 2038777.71 565522.018 228.891 0.04
hawks grnd 34 2038850.711 565700.332 228.317 0.04
hawks grnd 37 2038839.302 565722.262 228.265 0.041
hawks grnd 12 2038770.246 565929.866 231.879 0.042
hawks grnd 24 2038856.659 565567.029 228.58 0.042
hawks grnd 4 2038655.476 565806.743 228.759 0.042
hawks grnd 41 2038832.459 565751.625 226.237 0.042
hawks grnd 5 2038655.478 565806.724 228.758 0.042
hawks grnd 14 2038702.411 565866.17 232.023 0.043
hawks grnd 27 2038817.838 565621.741 228.601 0.043
hawks grnd 51 2038932.625 565799.546 225.69 0.044
hawks grnd 33 2038800.677 565676.4 228.723 0.045
hawks grnd 43 2038800.026 565700.549 228.18 0.045
Mean 3D Position Quality .049 m

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Future Network Enhancements Multi Sensor
Monitoring System
Bridge loading measurements, permanent
deformation measurement, automatic observation of
the bearing pads. Advantage Flexible use of the
total station for measurements with maximum
precision in manual or automatic mode. Most
importantly, the optical systems provide an
independent check of the GPS measurements.
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• Concept-to-Reality
• All sites located.
• Installations complete at 100 of core locations.
• Control Center is fully operational.
• Additional installations in progress.
• RD of future enhancements to continue.
• Inclusion into NGS CORS network.