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Research | Space Research | Space plasma physics - Radars - STARE
STARE (in operation 1998 - 2005)
STARE (Scandinavian Twin Auroral Radar Experiment) is a coherent scatter ionospheric radar system, which consists of two almost identical Doppler stations, one in Hankasalmi, Finland (62.3047 lat, 26.6494 lon), and the other one in Midtsandan, Norway (63.6667 lat, 10.73 lon).Each radar has eight beams, which are formed by a "Butler matrix". STARE is part of the MIRACLE ground-based network which contains magnetometers, all-sky cameras, and STARE.
Transmitter
- Frequency: 143.8 MHz (Hankasalmi),140.0 MHz (Midtsandan)
- Transmitter power (with 0.25 % duty cycle):50 kW (nominal)
- Range resolution: 50 microsecond (15 km)
Receiver
The receiver antenna consists of eighteen Yagi antennas. Sixteen antennas are connected to a Butler matrix providing eight channels with slightly different pointing directions. Two antennas are used as outrigger antenna forming the 9th channel. The eighteen antennas are provided with separate preamplifiers close to the antennas, which are connected to the main receiver section in the station container.
- Antenna construction: 64 8-element Yagi antennas arranged in 16 vertical stacks
- Collection area: 360 square meters
- Gain: +26 dB
- Elevation: 6 deg. above the horizontal, covarege +- 5 deg
- Azimuth: angular coverage 58 deg.
- Lobe width: 3.2 deg at half power
- Lobe separation: 3.6 deg.
- Range: 495-1200 km
Pulse coding
The radar integration time is 20 s, during which it can perform 210 scans
(measurements). Both single-pulse, double-pulse and multipulse code sequences
are used. The background noise is measured.
More information:
, tel. +358 9 1929 4635
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