Accession Number : AD0660113

Title :   STUDIES OF THE ANGULAR PROPERTIES OF VHF-AURORAL REFLECTIONS,

Corporate Author : KIRUNA GEOPHYSICAL OBSERVATORY (SWEDEN)

Personal Author(s) : Egeland,Alv

Report Date : 20 OCT 1961

Pagination or Media Count : 40

Abstract : Continuous recordings of the azimuthal dependence of the direction of incidence of auroral reflections in the 90 Mc/s band have been made at Kiruna Geophysical Observatory. Both the Swedish FM-transmitter in Ostersund (87.9 Mc/s) and the Finnish one in Kemi (92.8 Mc/s) were recorded simultaneously. In the period from April to September, 1961 the Swedish FM-transmitter Vannas (88.5 Mc/s) has been monitored. The auroral reflections from the three transmitters were recorded with the same antenna - a five-element Yagi - which rotated automatically in azimuth at a speed of 69 degrees per minute. (Author)

Descriptors :   (*AURORAE, REFLECTION), (*RADAR CROSS SECTIONS, VERY HIGH FREQUENCY), ANTENNAS, DIURNAL VARIATIONS, VELOCITY, IONIZATION, TRANSMITTER RECEIVERS, SENSITIVITY, THEORY, AZIMUTH, RADIO WAVES, SWEDEN

Subject Categories : Atmospheric Physics
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE