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First PMSE echo from the Kiruna VHF array

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The EISCAT_3D demonstrator array in Kiruna have been redirected to intersect the Tromso VHF radar directed vertically at the D-region. The physical elevation angle is set to 21 degrees, but model calculations of the beam pattern show 29 degrees.

The first experiment after redirection was carried out 9 June, and a lot of returns were immediately detected, mainly coherent, like meteors and PMSE. The data is received in two polarisations separately, and may be combined in software. The figure shows the Real-Time Graph display of one of the polarisations. PMSE echoes is clearly seen in all frequency bands, and are separated in two regions of space where the frequency resolution is high enough. The geometry of the transmitting and receiving antennas is such that the scattering angle of the echo is about 35 degrees of vertical.

Created by ingemar
Last modified 2011-06-09 16:04 expired