Omega/VLF Signal Coverage Database Development

摘要

The PACE (Performance Assessment and Coverage Evaluation) workstation used forOmega system performance analysis incorporates a 24-hour/4month/2-frequency/cell-format Omega system signal coverage database. PACE uses this database, in addition to other databases, to compute expected availability of the Omega system using 10.2 and/or 13.6 kHz Omega signals in a specified geographic region at a specified time (UT hour and month). The signal coverage database contains the signal coverage elements needed to establish usability/non-usability of the 10.2/13.6kHz Omega signals at a given location (cell) and time. This report describes the methodology used to generate the Omega signal covering database. In addition, the report presents candidate approaches, including the associated labor/computer resources, that could be used to generate a modal-signal database for the VLF Communications Network station.