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Sustaining HPWREN – Consider CRTN Model

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Presentation on theme: "Sustaining HPWREN – Consider CRTN Model"— Presentation transcript:

1 Sustaining HPWREN – Consider CRTN Model
Yehuda Bock Scripps Institution of Oceanography Director, SOPAC, CSRC 2009 HPWREN Annual Meeting Palomar Observatory November 5, 2009

2 California Real Time Network
~130 stations in California, operated by SOPAC, USGS, PBO, Orange County, San Diego County, MWD, NCEDC as prototype for early warning system and real-time positioning applications 1 Hz (once per second) raw GPS data streamed over dedicated radio links, microwave towers, and cell modems with a latency of a fraction of a second to server at SIO ~50% of stations use HPWREN Real Time (Active) Real Time (temp. down) Upgrade in Progress (

3 CRTN Consortium We need a way to expand GPS real-time network statewide and to cover the cost of operations at SOPAC/CSRC (necessitated due to recent drastic reduction in Federal funding to CSRC from NOAA/NOS/NGS) Developed a CRTN Proposal and Business Plan to form consortium of users and data providers, including membership fees and CRTN Board membership Held inaugural meeting of Consortium in October Consortium members will enter into service agreements with SOPAC Success in not guaranteed, especially in this economic environment HPWREN should consider a modified version of this approach to sustain itself and perhaps expand coverage

4 CRTN Proposal, 10/16/08 CRTN Business Plan, 7/15/09

5 CRTN Expansion Areas DWR, NOAA and SIO project for GPS meteorology and flooding early warning system With PBO, establish statewide base network at ~50 km spacing With Caltrans, to cover the Central Valley for positioning applications Cascadia region with ARRA funding through NSF (UNAVCO/PBO)

6 RTD Server, SOPAC Database, Web Services, GPS Explorer SOPAC Utilities
Variety of CRTN Uses CGPS Network Data Models Data CRTN Server NSRS/CSRS Coordinates Ultra-rapid SOPAC Orbits NOAATrop Model Ionosphere Model Crustal Motion Model Geoid Model RTD Server, SOPAC Database, Web Services, GPS Explorer SOPAC Utilities GPS Station Communications multiple data streams Consortium Member CSRC NMEA (CSRS) RTCM Earthquake Early Warning RTCM (CSRS) 1 Hz Displacements Positioning Service User Single-Base User Troposphere Delays Spatial Referencing Flood Early Warning

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