MULTIPATH PROPAGATION ON TRANSARCTIC HF CIRCUITS

Multipath observations of HF pulse transmissions are discussed as observed on the transpolar propagation path College, Alaska - Kiruna, Sweden. During the winter months the signal strength was unusually high at Kiruna. Furthermore, the signals received on 18 Mc/s showed usually 3 components, with ti...

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Bibliographic Details
Main Authors: Ortner,Johannes, Owren,Leif
Other Authors: KIRUNA GEOPHYSICAL OBSERVATORY (SWEDEN)
Format: Text
Language:English
Published: 1961
Subjects:
Atmospheric Physics
Radiofrequency Wave Propagation
Radio Communications
(*IONOSPHERIC PROPAGATION
RADIO WAVES)
(*RADIO TRANSMISSION
MULTIPLE OPERATION)
HIGH FREQUENCY
CIRCUITS
RADIO WAVES
ARCTIC REGIONS
PERIODIC VARIATIONS
REFLECTION
SWEDEN
Arctic
Kiruna
Alaska
Online Access:http://www.dtic.mil/docs/citations/AD0660109
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0660109
Description
Summary:Multipath observations of HF pulse transmissions are discussed as observed on the transpolar propagation path College, Alaska - Kiruna, Sweden. During the winter months the signal strength was unusually high at Kiruna. Furthermore, the signals received on 18 Mc/s showed usually 3 components, with time delays of 3 and 6-7 msec respectively. It is tried to explain the unusual propagation conditions by means of great-circle tilt modes. For the long delayed signal a laterally deviated mode is proposed. (Author) Prepared in cooperation with Geophysical Inst., College, Alaska.

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