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contributor authorBrooks, David A.
contributor authorBriscoe, Melbourne G.
date accessioned2017-06-09T16:33:40Z
date available2017-06-09T16:33:40Z
date copyright1991/12/01
date issued1991
identifier issn0739-0572
identifier otherams-700.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4211734
description abstractExperiences with two prototype telemetry systems developed for potential use with moored or drifting ocean instruments are described. The systems transfer data and commands between remote and base stations using direct high-frequency (HF) ionospheric radio propagation (shortwave radio) without intervening relay stations or satellites. The strategy exploits recent developments in digital packet-switching technology, which is readily available and can be inexpensively applied to oceanic problems. The potential advantages of packet methods over satellite methods include low cost, autonomy, two-way exchanges with the remote stations, and typical data rates of 1?10 bit s?1 averaged over several days. Coverage is effectively global but intermittent. Disadvantages mostly result from the interference and skip zones that characterize HF propagation. The tests described here took place near the time of a sunspot minimum; the utility of HF packet telemetry will be greatly increased when the sunspot cycle is near its maximum.
publisherAmerican Meteorological Society
titleTests of Long-Range Ocean Data Telemetry Using Frequency-Agile HF Packet-switching Protocols
typeJournal Paper
journal volume8
journal issue6
journal titleJournal of Atmospheric and Oceanic Technology
identifier doi10.1175/1520-0426(1991)008<0856:TOLROD>2.0.CO;2
journal fristpage856
journal lastpage868
treeJournal of Atmospheric and Oceanic Technology:;1991:;volume( 008 ):;issue: 006
contenttypeFulltext


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