Omega Signal Coverage Prediction Diagrams for 10.2 kHz. Volume I. Technical Approach.
Abstract
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 I presents the diagram development methodology and contains individual station nighttime modal interference diagrams. Each modal interference diagram identifies regions throughout the world where delta phi < or = 20 cec for nighttime propagation conditions.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1980
- Accession Number
- ADA092741
Entities
People
- Paul M. Creamer
- Radha R. Gupta
- Stephen F. Donnelly
- Suzanne Sayer
Organizations
- TASC, Inc