Predicted HF Coverage Reliabilities for the USCG SSB Small Craft Communication System in the Alaskan Region.

This work presents a study of the HF communication reliability of the high-frequency SSB small craft communication system for the Alaskan waters. Reliabilities are calculated assuming ionospheric propagation from a number of simulated ship positions (SSP's) in the waters bonded by 50 deg. N. to...

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Bibliographic Details
Main Author: Kissick,William A
Other Authors: OFFICE OF TELECOMMUNICATIONS BOULDER COLO INST FOR TELECOMMUNICATION SCIENCES
Format: Text
Language:English
Published: 1976
Subjects:
Marine Engineering
Radio Communications
*SINGLE SIDEBAND COMMUNICATIONS
*SMALL SHIPS
HIGH FREQUENCY
ALASKA
MERCHANT VESSELS
AREA COVERAGE
RELIABILITY(ELECTRONICS)
COAST GUARD SHIPS
AMVER(Automated Merchant Vessel Reporting System)
Automated Merchant Vessel Reporting System
Adak
Barrow
Kodiak
Alaska
Online Access:http://www.dtic.mil/docs/citations/ADA052083
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA052083
Description
Summary:This work presents a study of the HF communication reliability of the high-frequency SSB small craft communication system for the Alaskan waters. Reliabilities are calculated assuming ionospheric propagation from a number of simulated ship positions (SSP's) in the waters bonded by 50 deg. N. to 76 deg. N. and 125 deg. W. to 170 deg. E. to three existing shore stations (San Francisco, Honolulu, Kodiak) on three maritime frequency bands (represented by 4, 6, and 8 MHz). These calculations are used to produce 'base' coverage reliability maps for the following conditions: winter or summer, night or day, and high or low solar activity. It has been proposed to add one or two new shore stations at Adak or Barrow or both. The coverage reliability realized by adding either or both of these stations using all three frequencies is calculated. The best two and the best single frequency are then chosen for the added station(s) and the reliabilities are again calculated including either or both of the proposed stations. (Author)

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