The Juliusruh meteor radar

Short electromagnetic pulses are circumpolarly transmitted and from ionisation traces of invading meteoroids backwards reflected if the ionisation trace is perpendicular corresponding to the radar beam. The meteor echo is received by a reception antenna system consisting of 5 crossed Yagi antennas and is interferometrically analysed, thus estimating the location, the echo amplitude, and the radial velocity of the ionisation trace moving with the neutral wind. From many of such individual observations among other things the wind field for an altitude range between about 80 and 110 km can be estimated. Meteor observations in Juliusruh have continuously been carried out between November 1999 and August 2001 at 32.55 MHz and since May 2007 at 32.55 MHz and 53.5 MHz.

Technical parameters

 

Frequency32.55 MHz & 53.5 MHz
Peak power12 kW
Pulse width13.3 µs
Height resolution2 km
Transmitting  antenna1 crossed 3-element Yagi antenna
Receiving antennas5 crossed 2-element Yagi antennas

 

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