DocumentCode :
3184729
Title :
Long-term measurements of occupancy in the HF band 1.5-30 MHz
Author :
Noble, A.P. ; Farquha, S.G. ; Gott, G.F.
Author_Institution :
Defence Res. Agency, Malvern, UK
Volume :
1
fYear :
1995
fDate :
35009
Firstpage :
113
Abstract :
The HF band is heavily congested, particularly in Europe, but remains an important communications medium. A review of occupancy measurements performed over a period of years is presented, with the models which have been generated from the data. Use of the models is discussed. Since 1982, the UK MOD through DRA Malvern in conjunction with the University of Manchester Institute of Science and Technology, UMIST, has undertaken a continuous experiment to measure the interference in the HF part of the radio frequency spectrum. The objective of this long-term study was to look for aspects of statistically predictable structure in the man-made occupancy of the band, consisting of myriad signals arriving by both relatively-local groundwave propagation and from very long ranges by sky-wave paths; such information would then be made available to guide the design of modems and to aid frequency allocation and planning
Keywords :
HF radio propagation; electric variables measurement; frequency allocation; ionospheric electromagnetic wave propagation; military communication; radiocommunication; radiofrequency interference; 1.5 to 30 MHz; DRA Malvern; Europe; HF band occupancy; UK MOD; UMIST; University of Manchester Institute of Science and Technology; frequency allocation; frequency planning; groundwave propagation; interference measurement; long term measurements; man-made occupancy; models; modems; radio frequency spectrum; sky-wave paths; statistically predictable structure; Europe; Frequency measurement; Hafnium; Modems; Path planning; Performance evaluation; Radio frequency; Radio spectrum management; Radiofrequency interference; Signal design;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Military Communications Conference, 1995. MILCOM '95, Conference Record, IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-2489-7
Type :
conf
DOI :
10.1109/MILCOM.1995.483282
Filename :
483282
Link To Document :
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