Experimental Investigation of Spectral Characteristics of HF Signals at Longand Ultra-Long-Range Radio Paths

Experimental Investigation of Spectral Characteristics of HF Signals at Longand Ultra-Long-Range Radio Paths

The research results of the time of the day on frequency dependencies of the spectral characteristics of HF signals at radio paths from 3,500 to 19,000 km are presented for different seasons of the year. It is shown that the amplitude and optimum working frequency dependencies at ultra-long-range ra...

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Date:2012
Main Authors: Kascheev, S. B., Koloskov, A. V., Zalizovski, A. V., Galushko, V. G., Pikulik, I. I., Yampolski, Yu. M., Kurkin, V. I., Litovkin, G. I., Orlov, A. I., Petko, P. V.
Format: Article
Language:Russian
Published: Видавничий дім «Академперіодика» 2012
Online Access:http://rpra-journal.org.ua/index.php/ra/article/view/529
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Journal Title:Radio physics and radio astronomy

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Radio physics and radio astronomy
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spelling rpra-journalorgua-article-5292012-12-09T13:02:07Z Experimental Investigation of Spectral Characteristics of HF Signals at Longand Ultra-Long-Range Radio Paths Экспериментальные исследования спектральных характеристик КВ сигналов на дальних и сверхдальних трассах Kascheev, S. B. Koloskov, A. V. Zalizovski, A. V. Galushko, V. G. Pikulik, I. I. Yampolski, Yu. M. Kurkin, V. I. Litovkin, G. I. Orlov, A. I. Petko, P. V. The research results of the time of the day on frequency dependencies of the spectral characteristics of HF signals at radio paths from 3,500 to 19,000 km are presented for different seasons of the year. It is shown that the amplitude and optimum working frequency dependencies at ultra-long-range radio paths are in compliance with the predicted results for quiet geomagnetic conditions. The predictions are made in terms of the wave theory of HF wave propagation (modalanalysis method) using the IRI model. The influence of the global ionospheric irregularities induced by solar terminator and solar eclipse on the Doppler frequency and the amplitude of the spectral peak is analyzed. The possibility of direct and return signal’s discrimination using the Doppler technique for long- and ultra-long-range radio paths is shown. Приведены результаты исследований зависимостей спектральных характеристик КВ сигналов от времени суток и частоты на трассах протяженностью от 3.5 до 19 тыс. км, полученные в разные сезоны. Показано, что изменения амплитуды принятого сигнала и оптимальной рабочей частоты на сверхдальних трассах при отсутствии магнитных возмущений качественно совпадают с прогнозом, полученным в рамках волноводного подхода (метода нормальных волн) к описанию распространения КВ с использованием международной справочной модели ионосферы IRI. Проанализировано влияние на доплеровский сдвиг и амплитуду спектрального максимума принятого сигнала глобальных ионосферных возмущений, обусловленных терминатором и затмением Солнца. Показана возможность доплеровской селекции прямого и обратного сигналов на контрольных радиолиниях средней и большой протяженности. Видавничий дім «Академперіодика» 2012-12-09 Article Article application/pdf http://rpra-journal.org.ua/index.php/ra/article/view/529 РАДИОФИЗИКА И РАДИОАСТРОНОМИЯ; Vol 14, No 1 (2009); 12 RADIO PHYSICS AND RADIO ASTRONOMY; Vol 14, No 1 (2009); 12 РАДІОФІЗИКА І РАДІОАСТРОНОМІЯ; Vol 14, No 1 (2009); 12 2415-7007 1027-9636 ru http://rpra-journal.org.ua/index.php/ra/article/view/529/94
institution Radio physics and radio astronomy
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datestamp_date 2012-12-09T13:02:07Z
collection OJS
language Russian
format Article
author Kascheev, S. B.
Koloskov, A. V.
Zalizovski, A. V.
Galushko, V. G.
Pikulik, I. I.
Yampolski, Yu. M.
Kurkin, V. I.
Litovkin, G. I.
Orlov, A. I.
Petko, P. V.
spellingShingle Kascheev, S. B.
Koloskov, A. V.
Zalizovski, A. V.
Galushko, V. G.
Pikulik, I. I.
Yampolski, Yu. M.
Kurkin, V. I.
Litovkin, G. I.
Orlov, A. I.
Petko, P. V.
Experimental Investigation of Spectral Characteristics of HF Signals at Longand Ultra-Long-Range Radio Paths
author_facet Kascheev, S. B.
Koloskov, A. V.
Zalizovski, A. V.
Galushko, V. G.
Pikulik, I. I.
Yampolski, Yu. M.
Kurkin, V. I.
Litovkin, G. I.
Orlov, A. I.
Petko, P. V.
author_sort Kascheev, S. B.
title Experimental Investigation of Spectral Characteristics of HF Signals at Longand Ultra-Long-Range Radio Paths
title_short Experimental Investigation of Spectral Characteristics of HF Signals at Longand Ultra-Long-Range Radio Paths
title_full Experimental Investigation of Spectral Characteristics of HF Signals at Longand Ultra-Long-Range Radio Paths
title_fullStr Experimental Investigation of Spectral Characteristics of HF Signals at Longand Ultra-Long-Range Radio Paths
title_full_unstemmed Experimental Investigation of Spectral Characteristics of HF Signals at Longand Ultra-Long-Range Radio Paths
title_sort experimental investigation of spectral characteristics of hf signals at longand ultra-long-range radio paths
title_alt Экспериментальные исследования спектральных характеристик КВ сигналов на дальних и сверхдальних трассах
description The research results of the time of the day on frequency dependencies of the spectral characteristics of HF signals at radio paths from 3,500 to 19,000 km are presented for different seasons of the year. It is shown that the amplitude and optimum working frequency dependencies at ultra-long-range radio paths are in compliance with the predicted results for quiet geomagnetic conditions. The predictions are made in terms of the wave theory of HF wave propagation (modalanalysis method) using the IRI model. The influence of the global ionospheric irregularities induced by solar terminator and solar eclipse on the Doppler frequency and the amplitude of the spectral peak is analyzed. The possibility of direct and return signal’s discrimination using the Doppler technique for long- and ultra-long-range radio paths is shown.
publisher Видавничий дім «Академперіодика»
publishDate 2012
url http://rpra-journal.org.ua/index.php/ra/article/view/529
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first_indexed 2025-12-02T15:51:01Z
last_indexed 2025-12-02T15:51:01Z
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