Omega Signal Coverage Prediction Diagrams for 10.2 kHz. Volume III. Composite Diagrams.

• Main Authors: Gupta, Radha R, Donnelly, Stephen F, Creamer, Paul M, Sayer, Suzanne
• Other Authors: ANALYTIC SCIENCES CORP READING MA
• Format: Text
• Language: English
• Published: 1980
• Subjects: Navigation and Guidance; *OMEGA NAVIGATION; SIGNAL TO NOISE RATIO; PHASE; TIME; SIGNALS; ACCESS; AREA COVERAGE; DIAGRAMS; VERY LOW FREQUENCY; South Pole; South pole
• Online Access: http://www.dtic.mil/docs/citations/ADA092743; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA092743

Individual Omega station and composite (Omega Navigation System) 10.2 kHz signal coverage prediction diagrams have been developed for eight times. The diagrams show the global accessibility of 'usable' 10.2 kHz signals at eight fixed diurnal/seasonal times for two usable signal access criteria. Criterion I requires: signal-to-noise ratio (SNR) or = -20 dB (in a 100 Hz noise bandwidth) and delta phi or = 20 centicycles (cen), where delta phi is the modal interference-induced phase deviation in the signal phase relative to the reference signal phase. Criterion II differs from Criterion I in that the SNR or = -30 dB. Volume III contains 48 composite coverage diagrams which embody the eight coverage times, two signal access criteria, and three different projections (North and South pole centered Azimuthal Equal Distance, and Mercator). Each diagram displays the global accessibility of usable signals from the system for a designated signal access criterion and coverage time. See also Volume 4, AD-A092 744.