Computer Science – Sound
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980esasp.152...77y&link_type=abstract
In ESA European Rocket and Balloon Programs and Related Res. p 77-79 (SEE N81-10914 01-99)
Computer Science
Sound
Gravity Waves, Meteor Trails, Radar Measurement, Reception Diversity, Wind Measurement, Doppler Radar, Planetary Waves, Thermosphere
Scientific paper
Meteor wind radar data are collected over a relatively large geographical area with a single station. When transmitters of moderate power are used the data must be integrated for periods of typically half an hour during the afternoon when the echo rate is low to produce a sounding of the wind structure in the lower thermosphere. The wind components resolved are therefore of planetary magnitude and the short period and small scale internal gravity waves, known to exist at meteor heights, frequently go unresolved. It is believed that these gravity waves could be of considerable importance to the dynamics of the upper atmosphere and could account for up to 30 K heating per day. A system is described which was developed specifically to investigate these oscillations using separate receiving stations spaced a few kilometers from the main radar site, thus receiving reflections from a number of points along each meteor train. A further advantage of this system is that it removes an error on the single aerial system caused by reflections obtained in the back lobes.
Kingsley S. P.
Müller Hans-Georg
Young Robert
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