Orange County Real Time NetworkOrange County Real Time Network

OCRTNOCRTNCounty of Orange, CaliforniaCounty of Orange, California

Arthur R. Andrew IIIArthur R. Andrew III

OCRTNOCRTN

Consists of 10 real time CGPS stations throughout Consists of 10 real time CGPS stations throughout Orange County.Orange County.

Stations were part of the SCIGN network.Stations were part of the SCIGN network.

Real time data available to anyone at NO cost.Real time data available to anyone at NO cost.

OCRTN is a subOCRTN is a sub--network of California Real Time network of California Real Time Network (CRTN).Network (CRTN).

California Real Time Network California Real Time Network (CRTN)(CRTN)San Diego CountySan Diego County(SDCRTN)(SDCRTN)

Imperial CountyImperial County(ICRTN)(ICRTN)

Orange CountyOrange County(OCRTN) (OCRTN)

Riverside CountyRiverside County(RCRTN)(RCRTN)

Los Angeles County Los Angeles County (LACRTN)(LACRTN)

ParkfieldParkfield(PRTN)(PRTN)

Central ValleyCentral Valley(CVSRN)(CVSRN)

CRTN OCRTNCRTN OCRTN

OCRTN Baselines

Lengths(Avg: 15km or 10 miles)

Typical OCRTN SiteTypical OCRTN Site

Deep Drilled Braced MonumentDeep Drilled Braced Monument

OCRTN OCRTN -- Current RTK Data StreamsCurrent RTK Data Streams

Single Base Station Mode:Single Base Station Mode:Standard RTK using RTCM 2.2. User has ability to pick and choose base station.

Nearest Base Station Mode:Nearest Base Station Mode:Standard RTK using RTCM 2.2. Server picks the closest base station to the rover position.

Network Solution:Network Solution:Requires user to have proprietary software.

OCRTN OCRTN -- Datum & EpochsDatum & Epochs

OCRTN ServerOCRTN Server

NAD 83NAD 831991.35 Epoch1991.35 Epoch

CRTN ServerCRTN Server

NAD 83NAD 832007.00 Epoch2007.00 Epoch

All 10 stations were included in the NAD 83 (NSRS) All 10 stations were included in the NAD 83 (NSRS) National Readjustment.National Readjustment.

Station TRAK is part of the NGS CORS network.Station TRAK is part of the NGS CORS network.

www.ocgeomaticswww.ocgeomatics

http://http://sopac.ucsd.edu/projects/realtimesopac.ucsd.edu/projects/realtime//