Computer Program Performance Specification. Volume I. Radio Navigation Receiving Set, Omega AN/BRN-7.
Abstract
This specification describes the performance requirements for the Submarine OMEGA Computer Program used by the AN/BRN-7 OMEGA Navigation Set, which together define the Submarine OMEGA Navigation System. The OMEGA signals are transmitted from land-based stations in a multiplexed pattern on three carrier frequencies. On each frequency the pattern is composed of eight consecutive bursts of energy which repeat every 10 seconds (the OMEGA broadcast cycle). To receive these patterns there are three superheterodyne receivers in the OMEGA hardware, one receiver for each frequency to process each burst of the incoming patterns. The resultant output of each receiver strip is a sine-cosine pair of digital numbers whose values represent a time integration over 5 milliseconds of whatever signal happened to be processed by the receiver during that time. If no signal was present, then the pair represents random noise; if a signal was present, then the pair will represent the sine and cosine of the phase of that signal relative to that of the OMEGA-system crystal oscillator.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 12, 1973
- Accession Number
- ADA047906