Accession Number : AD0659959

Title :   LANE IDENTIFICATION IN THE OMEGA SYSTEM.

Descriptive Note : Memorandum rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Brogden, J. W. ; Luken, K. O.

Report Date : 28 JUL 1967

Pagination or Media Count : 47

Abstract : 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.

Descriptors :   *VERY LOW FREQUENCY), (*RADIO NAVIGATION, (*HYPERBOLIC NAVIGATION, RADIO SIGNALS), DIURNAL VARIATIONS, RADIO WAVES, PROPAGATION, IDENTIFICATION, ACCURACY, RELIABILITY, OMEGA NAVIGATION.

Subject Categories : Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE