Загоризонтная КВ радиолокация мелкомасштабных неоднородностей среднеширотной ионосферы с помощью
ЛЧМ ионозонда-радиопеленгатора
Номер: 11 Год: 2015 Страницы: 44-49
ЛЧМ ионозонда-радиопеленгатора
Номер: 11 Год: 2015 Страницы: 44-49
УДК: 550.388.2
EDN: TMCGRX
Автор(ы):
Урядов Валерий Павлович1, email: uryadovvp@nirfi.sci-nnov.ruВертоградов Геннадий Георгиевич2
Вертоградова Елена Георгиевна2, email: vgg@bmail.ru
Учреждения:
1 - ФГБНУ Научно-исследовательский радиофизический институт
2 - ФГОУ ВПО Южный федеральный университет», 344090, г. Ростов-на-Дону, ул. Зорге, 5
Аннотация:
Представлены новые результаты изучения среднеширотного F-рассеяния, полученные с помощью широко-полосного КВ радара бистатической конфигурации на трассе ЛЧМ зондирования Кипр - Ростов-на-Дону, когда в приемном пункте использовался ионозонд - радиопеленгатор.
Ключевые слова: загоризонтная радиолокация, ионосфера, ЛЧМ зондирование
Сведения об источниках финансирования: -
1 - ФГБНУ Научно-исследовательский радиофизический институт
2 - ФГОУ ВПО Южный федеральный университет», 344090, г. Ростов-на-Дону, ул. Зорге, 5
Аннотация:
Представлены новые результаты изучения среднеширотного F-рассеяния, полученные с помощью широко-полосного КВ радара бистатической конфигурации на трассе ЛЧМ зондирования Кипр - Ростов-на-Дону, когда в приемном пункте использовался ионозонд - радиопеленгатор.
Ключевые слова: загоризонтная радиолокация, ионосфера, ЛЧМ зондирование
Сведения об источниках финансирования: -
Урядов, В. П. Загоризонтная КВ радиолокация мелкомасштабных неоднородностей среднеширотной ионосферы с помощью ЛЧМ ионозонда-радиопеленгатора / В. П. Урядов, Г. Г. Вертоградов, Е. Г. Вертоградова // Гелиогеофизические исследования. – 2015. – № 11. – С. 44-49. – EDN TMCGRX.
Over-the-horizon HF radiolocation of small-scale irregularities of middle-latitude ionosphere with help
LFM ionosonde-radiodirection finder
Number: 11 Year: 2015 Pages: 44-49
LFM ionosonde-radiodirection finder
Number: 11 Year: 2015 Pages: 44-49
Uryadov Valery Pavlovich1, email: uryadovvp@nirfi.sci-nnov.ru
Vertogradov Gennady Georgievich2
Vertogradov Gennady Georgievich2
Vertogradova Elena Georgievna2, email: vgg@bmail.ru
Institutions:
1 - FSBI Scientific Research Radiophysical Institute
2 - Federal State Educational Institution of Higher Professional Education Southern Federal University, 5 Sorge St., Rostov-on-Don, 344090
Abstract
Research results of spread F in a middle-latitude ionosphere with help of new technologies of oblique sounding with use LFM ionosonde-radiodiraction finder are presented. Measurements were carried out at LFM sounding Cyprus - Rostov-Don path. At this path for long time approxi-mately from 21:30 LT for 04 January 2012 till 06:20 LT for 05 January 2012 at oblique sounding ionograms the strongly spread scattered signal was registered on frequencies exceeding a maximum observed frequency (MOF) of a direct signal. On the basis of modeling in view of distance-frequency-characteristics and angle-frequency-characteristics meas-urements results the positioning of areas responsible for scattering signals was carried out. Vertical angles of arrival scattering signal lay in interval of values ~25-45 and in view of range from receiver to this area ~500-800 km can be spoken that for occurrence of scattering signal the area of a middle-latitude top iono-sphere at height ~250-500 km is responsible.
We believe that spread signal is caused by radio waves scattering from small-scale ionospheric irregularities located in this extended area which reaching in external ionosphere above than maximum of F-layer. The transverse sizes of irregularities are easy to estimate from expression . In our case for practically backscatter when and, we obtain .
Keywords: over-the-horizon HF radiolocation, ionosphere, LFM sounding.
Information about sources of financing: -
1 - FSBI Scientific Research Radiophysical Institute
2 - Federal State Educational Institution of Higher Professional Education Southern Federal University, 5 Sorge St., Rostov-on-Don, 344090
Abstract
Research results of spread F in a middle-latitude ionosphere with help of new technologies of oblique sounding with use LFM ionosonde-radiodiraction finder are presented. Measurements were carried out at LFM sounding Cyprus - Rostov-Don path. At this path for long time approxi-mately from 21:30 LT for 04 January 2012 till 06:20 LT for 05 January 2012 at oblique sounding ionograms the strongly spread scattered signal was registered on frequencies exceeding a maximum observed frequency (MOF) of a direct signal. On the basis of modeling in view of distance-frequency-characteristics and angle-frequency-characteristics meas-urements results the positioning of areas responsible for scattering signals was carried out. Vertical angles of arrival scattering signal lay in interval of values ~25-45 and in view of range from receiver to this area ~500-800 km can be spoken that for occurrence of scattering signal the area of a middle-latitude top iono-sphere at height ~250-500 km is responsible.
We believe that spread signal is caused by radio waves scattering from small-scale ionospheric irregularities located in this extended area which reaching in external ionosphere above than maximum of F-layer. The transverse sizes of irregularities are easy to estimate from expression . In our case for practically backscatter when and, we obtain .
Keywords: over-the-horizon HF radiolocation, ionosphere, LFM sounding.
Information about sources of financing: -