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...
Main Authors: | , |
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Format: | Text |
Language: | English |
Published: |
1961
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Online Access: | http://www.dtic.mil/docs/citations/AD0660109 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0660109 |
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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