LANE IDENTIFICATION IN THE OMEGA SYSTEM.
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
The first step of removing the position ambiguity in the Omega system is to identify the correct 10.2 kiloHertz kHz lane. This is accomplished by means of the 13.6 kHz transmissions which result in a difference frequency of 3.4 kHz and increase the width of the ambiguous zone by a factor of three to 24 miles. This is the most critical step in the ambiguity resolution procedure. Omega monitors were operated in Washington, D. C., and Orlando, Florida, to obtain information on the repeatability and reliability of the 3.4 kHz phase difference. The absolute position accuracy is not considered in this report. The data show that on the basis of repeatability lane identification is possible at least 95 of the time except on occasions during transition periods, light-to-dark or vice versa. Diurnal variations and fixed errors can be removed with available sky-wave correction tables.
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