Accession Number : AD0709555

Title :   ACCURACY STUDIES OF THE DIFFERENTIAL OMEGA TECHNIQUE.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

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

Report Date : 29 JUN 1970

Pagination or Media Count : 40

Abstract : The Omega navigation system is a vlf radio navigation system which will provide worldwide coverage with an accuracy of 1 to 2 mi or better using eight transmitting stations. This absolute accuracy is limited by the stability of the phase velocity and the ability to predict it. The relative accuracy of the Omega system, the determination of the distance between two receivers, is much better than the geographic accuracy of 1 or 2 mi because the propagation variations over a comparatively small area are correlated. The report gives the results of the relative accuracy of the Omega system, based on a study which was made in the Washington area. Relative accuracies of 350 yd or better were obtained. The maximum receiver separation was 40 mi. Two type AN/WRN-2(XN-1) Omega monitor receivers were modified to obtain the greatest accuracy possible with this equipment. The data obtained with these equipments on relative Omega in the Washington area showed that a significant portion of the error was instrumental, and if further studies are conducted, improved equipment should be obtained. (Author)

Descriptors :   *RADIO NAVIGATION, ACCURACY, LOW FREQUENCY, NAVIGATIONAL AIDS, DISTRICT OF COLUMBIA, TRINIDAD, HAWAII, NORWAY.

Subject Categories : Navigation and Guidance
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE