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GPS Information Sources. CGSIC ISC Asia-Pacific Meeting Melbourne, Australia 10-11 February 2003. Overview. GPS System Information, Notification, and Reporting Coast Guard Navigation Center Federal Aviation Administration Civil GPS Service Interface Committee. Background.
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GPS Information Sources CGSIC ISC Asia-Pacific Meeting Melbourne, Australia 10-11 February 2003
Overview GPS System Information, Notification, and Reporting • Coast Guard Navigation Center • Federal Aviation Administration Civil GPS Service Interface Committee
Background Detailed MOA’s between each organization Established in DOT/DoD MOA, Annex 3 USCG NIS FAA NOCC USSPC GSC Joint GPS User Support Service The Core
NIS Information • GPS System design information • SPS Performance Standard • Interface Control Document (ICD-200) • Operational Information • NANUs / GPS Status • Static • Listserver distribution • NIS Mirror Site (http://www.nis-mirror.com/) • Modernization • Latest updates, L5 & L2 signal specification
NIS Information • Radionavigation Policy • Federal Radionavigation Plan • Presidential Decision Directives • US Nationwide Differential GPS System • Specifications • High Accuracy DGPS • U.S. Loran-C
GPS General Information • GPS Status Reports • GPS Service Interruptions • GPS Almanac Information • Precise Ephemeris Info • Subscribe to Listserver Messages • Selective Availability • GPS Modernization • Report a GPS Problem • Frequently Asked Questions • Augmentation Systems • Reference Information
GPS Page Choices • GPS General Information • GPS Status Reports • GPS Service Interruptions • GPS Almanac Information • Precise Ephemeris Info • Subscribe to Listserver Messages • Selective Availability • GPS Modernization • Report a GPS Problem • Frequently Asked Questions • Augmentation Systems • Reference Information
General Information • Subscribe to the GPS Status Message and/or the NANU List server • Latest PDOP Chart (displays overall Dilution of Precision Values) Status • Latest GPS Status Message • GPS Status Message Archives NANUs • Active NANUs • NANU Abbreviations and Descriptions • NANU Archives (1990-2001) • Search the current year by NANU Number • Search a previous year by NANU Number
NANU Abbreviations Forecast Outages • FCSTDV FCSTMX • FCSTEXTD FCSTSUMM • FCSTCANC FCSTRESCD Unscheduled Outages • UNUSUFN UNUSABLE • UNUNOREF Other • USABINIT LEAPSEC • GENERAL
Outage Reporting • Disruption to GPS service should be reported to: • USCG NAVCEN • http://www.navcen.uscg.gov • On-line form • An attempt will be made to identify the problem • Report to user
GPS Page Choices • GPS General Information • GPS Status Reports • GPS Service Interruptions • GPS Almanac Information • Precise Ephemeris Info • Subscribe to Listserver Messages • Selective Availability • GPS Modernization • Report a GPS Problem • Frequently Asked Questions • Augmentation Systems • Reference Information
Outage Reporting 1. What indicated there was a problem? 2. How many Satellites were being tracked? 3. What SVs were being track? 4. Elevation of the receiver antenna? 5. Duration and number (approximate) of known occurrences? 6. Did any operator (you) action help? 7. Location of problem? * 8. Closest geographic region* 9. Type of equipment? (receiver model, antenna type, etc...) 10. Type of installation? (boat, car, handheld, plane) 11. Other probable causes? * 12. What was the receiver being used for at time of occurrence? 13. Contact Information
Aviation Information GPS Implementation/ WAAS/ LAAS • http://gps.faa.gov/ GPS NOTAMS • FAA NOCC • International NOTAMs
Useful Links • USCG Navigation Center • http://www.navcen.uscg.gov • Interagency GPS Executive Board Executive Secretariat • http://www.igeb.gov • FAA- WAAS, LAAS • http://www.gps.faa.gov
Navigation Information Service • http://www.navcen.uscg.gov • http://www.nis-mirror.com (mirror site) • E-mail: nisws@navcen.uscg.mil • Phone: +1 703 313 5900 • Fax: +1 703 313 5920 Civil GPS Service Interface Committee • E-mail: rcasswell@navcen.uscg.mil