Service Standards

CSRS database and online services

  • The CSRS database will be up 95% of the time, 7 days a week.

CACS GNSS data files

  • Files are in RINEX format and contain satellite observation data from GPS and Glonass (where available).
  • The core stations of the Canadian Active Control System (CACS) are ALGO, ALRT, BAKE, CHUR, DRAO, DUBO, EUR2, FLIN, FRDN, HLFX, KUUJ, NRC1, PRDS, SASK, SCH2, STJO, WHIT and YELL.
  • Daily files (24-hours with 30-second epochs)
    • All data received from the core CACS stations will be online within 30 minutes after the end of the day 95% of the time.
    • Data from other CACS stations will be online on a best-effort basis.  In general data will be posted within 2 hours after end of day if no communication problems occur. Arctic sites can have much longer delays (up to a few days) depending on local weather conditions and power outages.
  • Hourly files (1-hour with 30-second epochs)
    • All data received from the core CACS stations will be online within 15 minutes of the hour just ended 90% of the time.

GPS analysis products

  • Weekly final ephemerides (orbits and 30-second clock corrections) will be delivered within 13 days 100% of the time.  Accuracy with respect to international standards will be less than or equal to 4 centimeters for final orbits and 100 picoseconds (10-12 sec) for final clocks.
  • Daily rapid ephemerides (orbits and 5-minute clock corrections) will be delivered within 16 hours 95% of the time.  Accuracy with respect to international standards will be less than or equal to 5 centimeters for rapid orbits and 100 picoseconds (10-12 sec) for rapid clocks.

CSRS-PPP GPS post-processing service

  • The service will use the best precise ephemerides available (final, rapid or ultra-rapid) at the time data is submitted for post-processing.
  • Post-processing can be performed as early as 90 to 150 minutes after data collection using ultra-rapid precise ephemerides (available hourly within 90 minutes of the hour just ended).
  • Data submitted before ultra-rapid precise ephemerides are available is placed in a queue and processed when they (ephemerides) become available.

Client Support

  • Client inquiries received by email, phone or fax will get a reply or an acknowledgment of the request within 2 hours during regular business hours.  Inquiries regarding technical matters will be provided with a response within 2 working days of the request.

Please provide your comments and opportunities for improvement at information@geod.nrcan.gc.ca