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Description of the radar set, tactical-technical characteristics

Figure 1: MAARSY

frequency: 53.5 MHz
pulse repetition time (PRT):
pulse repetition frequency (PRF): ≤ 30 kHz
pulsewidth (τ): ≥ 0.33 μs
receiving time:
dead time:
peak power: 800 kW
average power:
instrumented range: 150 km
range resolution: ≥ 50 m
beamwidth: 3.6°
hits per scan:
antenna rotation:


MAARSY (Middle Atmosphere Alomar Radar System) is an MST-Radar operating in the VHF range which was installed in Andenes, Norway (69°17'54.1" N   16°02'29.0" E) around 2010. It replaced the Alwin radar that existed there until then.

The radar antenna consists of 433 Yagi-antennas, as radiators, each with three elements distributed on a dodecagonal area of 6 300 m² with a triangular pattern. The radiators are each cross-interleaved to realize two different polarization planes. Their bandwidth is 5 MHz.

Each individual antenna is connected to its own transceiver with independent phase control and a scalable output up to 2 kW.

The signal shape of the transmitted signal is either rectangular, Gaussian or trapezoidal. The radar can transmit either with an unmodulated short pulse or phase-coded with a complementary or a Barker code.