Fifty Years of HF Doppler Observations
نویسندگان
چکیده
High frequency Doppler observations of the ionosphere began in August of 1957 in Kyoto. The number of the observation points worldwide were about 40 in 1980 and are about 20 at present. By this method the movement of the ionosphere ref lection height and electron density below the height can be observed. Such variations are occurred by a wide variety of sources.
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عنوان ژورنال:
- Data Science Journal
دوره 8 شماره
صفحات -
تاریخ انتشار 2009