Sweden: Probing the ionosphere
نویسندگان
چکیده
منابع مشابه
Ionosphere Probing with a High Frequency Surface Wave Radar
This paper describes how the ionosphere reflected echoes observed by a high frequency surface wave radar (HFSWR) can be processed to extract information regarding the ionosphere sporadic E (Es) and F2 layers. It is shown that the range/time spectrum contains the data to estimate the occurring time and virtual heights of both the still and drifting Es layer clouds. In addition, for the drifting ...
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Using knowledge of the low-frequency radio sky and the simulated observational capabilities of the Long Wavelength Array (LWA) we present a feasible method for the LWA to probe the overall structure of the ionosphere above the LWA. Such measurements could serve as the initial step in calibrating the ionospheric phases that distort astronomical images, thereby allowing the LWA to reach its full ...
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Observations are presented of the polar ionosphere under steady, northward IMF. The measurements, made by six complementary experimental techniques, including radio tomography, all-sky and meridian scanning photometer optical imaging, incoherent and coherent scatter radars and satellite particle detection, reveal plasma parameters consistent with ionospheric signatures of lobe reconnection. The...
متن کاملCoherent matched filter signal‐processing algorithms for probing the ionosphere using broadband RF data
[1] We have developed a new method for extracting ionospheric parameters from broadband RF data collected in low‐Earth orbit using coherent matched filters. The coherent matched filter uses the full time series of the electric field and matches the Fourier transform of these data with an ionospheric transfer function. This approach was applied to both lightning and human‐made data transmitted o...
متن کاملThe International Reference Ionosphere – Climatological Standard for the Ionosphere
The International Reference Ionosphere (IRI) a joint project of URSI and COSPAR is the defacto standard for a climatological specification of ionospheric parameters. IRI is based on a wide range of ground and space data and has been steadily improved since its inception in 1969 with the ever-increasing volume of ionospheric data and with better mathematical descriptions of the observed global a...
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ژورنال
عنوان ژورنال: Nature
سال: 1976
ISSN: 0028-0836,1476-4687
DOI: 10.1038/259522a0