User's Guide

UPNAV_DAEMON

Daemon to transfer ephemeris and time correction data.

Function:

Daemon to transfer ephemeris and time correction data. Part of the UPNAV procedure.

Examples:

  1. LAS> upnav_daemon

    UPNAV_DAEMON will call UPNAV every 4 hours to process ephemeris data and to propagate ephemeris and time correction tables to all supported systems.

Description/Algorithm:

UPNAV_DAEMON calls UPNAV to process ephemeris data and to propagate ephemeris and NBS time correction tables (see the UPNAV module for more details). UPNAV_DAEMON checks every 10 minutes to determine if the operator is attempting to terminate the daemon.

Nonfatal Error Message:

    None

Fatal Error Messages:

  1. [upnav-sfil] Error determining the stop file

    The stop file name could not be determined or could not be found. Verify that the ADAPSTABLES directory exists with the proper permission.

  2. [upnav-slep] Error attempting to sleep

    An error occurred while attempting to sleep. Contact the system administrator if this error occurs.

  3. [upnav-upnav] Error processing in routine UPNAV

    An error occurred while processing or propagating the data. Refer to the specific error message preceding this error message.

User Notes:

    None