PRESENTATION OF A NEW HIGH-FREQUENCY COMMUNICATION SYSTEM PERFORMANCE PREDICTION TECHNIQUE
PRESENTATION OF A NEW HIGH-FREQUENCY COMMUNICATION SYSTEM PERFORMANCE PREDICTION TECHNIQUE
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Date
1965
Authors
Gatts, Thomas Fiscus Jr.
Advisor
Reed, Henry R.
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Abstract
The prediction technique developed by the National
Bureau of Standards has been used extensively by high-frequency
communicators. An adaption of this technique is
used to demonstrate the type of results obtained when
applied to the Buffalo, N.Y. to Boston, Mass. (B/B) link
for January and July 1965. A new prediction technique is
presented which will allow the HF communicator to predict
system performance between the maximum useable frequency
(MUF) and the lowest useable frequency (LUF) and which is
flexible enough to allow system parameter changes to be
made and the effect on the overall system determined. The
new technique is demonstrated by applying it to the B/B
link for January and July 1965 and displaying the results
in the form of relative gain contours, which show the effect on communication capability of reducing the LUF
by increasing system gain and the increase in process gain
that may be achieved for the purpose of raising the data
rate or decreasing transmission error rate. Some of the
many applications of the results of this new technique are
presented. The results are used: (1) to facilitate the
selection of necessary operating frequencies to provide
communication throughout a 24-hour period, (2) to estimate the severity and length of occurrence of multipath, (3) to
investigate possible frequency adaption, and (4) to investigate
possible power adaption.