Statistics – Applications
Scientific paper
Sep 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978aews.agaru....b&link_type=abstract
In AGARD Aspects of Electromagnetic Wave Scattering in Radio Commun. 26 p (SEE N79-10299 01-32)
Statistics
Applications
Meteor Trails, Meteoroid Showers, Radio Communication, Electromagnetic Scattering, Signal Processing, Statistical Distributions
Scientific paper
The phenomenon of propagation via meteor trails is reviewed, and the STC meteor burst communication system, COMET, which used ARQ and diversity reception to provide several telegraph channels on a 1000 km path is described. Results of extensive testing of COMET at frequencies near 40 and 100 MHz are presented. Signal level statistics, as well as burst length and interval statistics, are included for both frequencies. The traffic capacity of the COMET system at the two frequencies was compared, based on extensive trials, using simple yagi antennas and transmitter powers of 200 W and 2000 W at 40 and 100 MHz, respectively. Reasons for the observed dependance were developed, and it was due primarily to the physics of meteor propagation, rather than to inefficiencies in the COMET system. Two possible applications of a COMET system, a low capacity jamming resistant circuit and a reliable orderwire for an HF system, are briefly discussed and suggested circuit parameters set out.
Brown David W.
Williams Peter H.
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