Auroral backscatter observed at HF from Ottawa
Bistatic HF radar recordings of auroral scattering sources north of Ottawa are reported. Doppler frequency spreads over + or - 100 Hz were obtained at least 35 percent of the time. The peak of the Doppler frequency distribution was sometimes shifted from zero by as much as 50 Hz, and significant contributions often occurred at Doppler frequencies greater than 150 Hz. Signals received simultaneously on both arms of a two-arm direction-finding array were used to identify the specific elevations and bearings of the backscatter signals. A detailed study of a particular hour-long period is reported, and a large number of 'apparent' auroral backscatter sources are identified. The source regions, probably located in the F layer, were elongated mainly in the north-south direction and extended over at least 3 deg of latitude. North-south corridors were found between such sources in which echo returns were either absent or very weak. 14 references.
- Research Organization:
- CDC, Communications Research Centre, Ottawa (Canada)
- OSTI ID:
- 6533341
- Journal Information:
- Radio Sci.; (United States), Vol. 23
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
F REGION
BACKSCATTERING
AURORAL ZONES
DOPPLER EFFECT
IONOSONDES
RADAR
WAVE PROPAGATION
EARTH ATMOSPHERE
ELECTRONIC EQUIPMENT
EQUIPMENT
IONOSPHERE
MEASURING INSTRUMENTS
PLANETARY IONOSPHERES
RADIO EQUIPMENT
RANGE FINDERS
SCATTERING
640201* - Atmospheric Physics- Auroral
Ionospheric
& Magetospheric Phenomena