HF Radio Wave Absorption in the Nighttime : Part III. Ray Paths and Absorption of MF and HF Radio Waves Incident at the Nighttime Ionosphere (Reports of the Japanese Antarctic Research Expedition)

HF Radio Wave Absorption in the Nighttime : Part III. Ray Paths and Absorption of MF and HF Radio Waves Incident at the Nighttime Ionosphere (Reports of the Japanese Antarctic Research Expedition)

Computations of the ray path and absorption of radio waves by means of the ray-tracing technique are applied to the oblique propagation of MF and HF waves passing through model ionospheres in the nighttime under different conditions. The field intensity deduced from those computed results is discuss...

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Bibliographic Details
Main Author: Noboru WAKAI
Format: Article
Language:English
Published: National Institute of Polar Research 1971-07-01
Series:Antarctic Record
Online Access:https://doi.org/10.15094/00007625
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spelling doaj-7620dc010bd847c2ae9020f62e56155b2020-11-25T00:56:09ZengNational Institute of Polar ResearchAntarctic Record0085-72892432-079X1971-07-014192310.15094/00007625HF Radio Wave Absorption in the Nighttime : Part III. Ray Paths and Absorption of MF and HF Radio Waves Incident at the Nighttime Ionosphere (Reports of the Japanese Antarctic Research Expedition)Noboru WAKAI0Hiraiso Branch, Radio Research LaboratoriesComputations of the ray path and absorption of radio waves by means of the ray-tracing technique are applied to the oblique propagation of MF and HF waves passing through model ionospheres in the nighttime under different conditions. The field intensity deduced from those computed results is discussed in comparison with that measured on board the ship of the Japanese Antarctic Research Expeditions as already reported in Parts I and II of this paper. It is confirmed quantitatively to a certain degree that the ionization in the nighttime E region is responsible for the absorption of MF and lower HF waves.https://doi.org/10.15094/00007625
collection DOAJ
language English
format Article
sources DOAJ
author Noboru WAKAI
spellingShingle Noboru WAKAI
HF Radio Wave Absorption in the Nighttime : Part III. Ray Paths and Absorption of MF and HF Radio Waves Incident at the Nighttime Ionosphere (Reports of the Japanese Antarctic Research Expedition)
Antarctic Record
author_facet Noboru WAKAI
author_sort Noboru WAKAI
title HF Radio Wave Absorption in the Nighttime : Part III. Ray Paths and Absorption of MF and HF Radio Waves Incident at the Nighttime Ionosphere (Reports of the Japanese Antarctic Research Expedition)
title_short HF Radio Wave Absorption in the Nighttime : Part III. Ray Paths and Absorption of MF and HF Radio Waves Incident at the Nighttime Ionosphere (Reports of the Japanese Antarctic Research Expedition)
title_full HF Radio Wave Absorption in the Nighttime : Part III. Ray Paths and Absorption of MF and HF Radio Waves Incident at the Nighttime Ionosphere (Reports of the Japanese Antarctic Research Expedition)
title_fullStr HF Radio Wave Absorption in the Nighttime : Part III. Ray Paths and Absorption of MF and HF Radio Waves Incident at the Nighttime Ionosphere (Reports of the Japanese Antarctic Research Expedition)
title_full_unstemmed HF Radio Wave Absorption in the Nighttime : Part III. Ray Paths and Absorption of MF and HF Radio Waves Incident at the Nighttime Ionosphere (Reports of the Japanese Antarctic Research Expedition)
title_sort hf radio wave absorption in the nighttime : part iii. ray paths and absorption of mf and hf radio waves incident at the nighttime ionosphere (reports of the japanese antarctic research expedition)
publisher National Institute of Polar Research
series Antarctic Record
issn 0085-7289
2432-079X
publishDate 1971-07-01
description Computations of the ray path and absorption of radio waves by means of the ray-tracing technique are applied to the oblique propagation of MF and HF waves passing through model ionospheres in the nighttime under different conditions. The field intensity deduced from those computed results is discussed in comparison with that measured on board the ship of the Japanese Antarctic Research Expeditions as already reported in Parts I and II of this paper. It is confirmed quantitatively to a certain degree that the ionization in the nighttime E region is responsible for the absorption of MF and lower HF waves.
url https://doi.org/10.15094/00007625
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