1 / 11

Real-time IGS Network Management and Data Exchange Interfaces

Real-time IGS Network Management and Data Exchange Interfaces. Georg Weber, BKG, Germany IGS Analysis Center Workshop, Miami Beach, Florida, 2-6 June 2008. UDP Relay Broadcast. Relays operated by JPL, NRCan, GA, ESOC, and GFZ since 2003

roy
Download Presentation

Real-time IGS Network Management and Data Exchange Interfaces

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Real-time IGSNetwork Management andData Exchange Interfaces Georg Weber, BKG, Germany IGS Analysis Center Workshop, Miami Beach, Florida, 2-6 June 2008

  2. UDP Relay Broadcast • Relays operated by JPL, NRCan, GA, ESOC, and GFZ since 2003 • Network management, data exchange and software provided by NRCan • System description and status information at www.rtigs.net

  3. NTRIP Broadcast 2003: Permanent operation for EUREF & IGS 2004: RTCM Recommended Standard 2006: Operated at URL www.igs-ip.net 2008: „UDP Relay  NTRIP Interface“ of Pilot Project • 140 streams from 54 providers • 92 IGS, 9 prop. IGS, 29 Miscellaneous, 10 Test • ~40 via UDP from NRCan, ~100 from NTRIP resources • ~1000 registered users, ~40 active every day • Open Source sw for NtripClient, NtripServer, NtripCaster, stream decoding and conversion

  4. Features • Automated online stream user registration • Open data policy • Online stream provider registration • Monitoring: corrupted streams, outages, latencies, meta-data, no post-processing • Alarm system:Notice Advisory to Broadcaster User (NABU) • ROB: http://www.igs.oma.be/real-time/

  5. Distribution

  6. Limits • 200+ streams1000 simultaneously listening clients • Need regional broadcast services • GA Australia & UNSW, EUREF Europe, CORS/PBO U.S.A, SIRGAS South America? • Need thematic (re-)broadcast services for specific communities • Orbit/clocks, ionospher, troposphere

  7. Formats and Transport Protocols • SOC: unlikely to be upgraded to GNSS • RTCMv3: one code per frequency • Adapt (or develop?) other format to include all GNSS observables with app. resolution • CandidatesFormat: RTCM & BINEX,Transport: NTRIP & UDP Relay

  8. Near Real-time Applications • Usually don‘t need access to broadcast service • Interest in 5...15min high-rate RINEX files • Upload of RINEX from stream conversion to GDC • Users should understand specifics of stream formats

  9. Summary of current deficiencies • RTIGS Web representation • User and stream provider registration • Precise coordinates for non IGS stations • „NTRIP Interface  UDP Relay“ • Format & transport protocol for orbits/clocks, observations • Bilateral (protected) stream exchange • More (Re-)Broadcast to share expected workload • Upgrade all IGS stations to real-time, close gaps • End-to-end backup concept • Mind: RTIGS is not only about orbit/clock estimation

More Related