Computer Science – Sound
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jatp...42..975z&link_type=abstract
Journal of Atmospheric and Terrestrial Physics, vol. 42, Nov.-Dec. 1980, p. 975-982. Research supported by the Conselho Naciona
Computer Science
Sound
3
Coding, Incoherent Scatter Radar, Ionospheric Sounding, Lower Ionosphere, Pulse Compression, Autocorrelation, Sporadic E Layer
Scientific paper
The combination of Barker-coded pulse compression techniques with the multiple pulse technique in incoherent scatter studies of the lower ionosphere is discussed. The basic principles of both techniques are reviewed, and the combined technique is presented as consisting of the coding of each pulse of the multiple pulse scheme by a b-baud Barker code. Design considerations for measurements from which the autocorrelation function can be computed are examined for the case of the radar at Arecibo, and possible experiments for observations of sporadic E layers, man-made ionospheric modification and the nighttime E layer are proposed. It is noted that the advantage of the Barker-coded multiple pulse technique consists in the possibility of obtaining simultaneously height and frequency resolution, which is important in the observation of thin layers with narrow frequency spectra.
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