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Horizon

Description of the radar set, tactical-technical characteristics

Figure 1: Horizon

Figure 1: Horizon

Specifications
frequency: X-Band
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ):
receive time:
dead time:
peak power:
average power:
instrumented range: 150 km
range resolution:
accuracy:
beamwidth:
hits per scan:
antenna rotation:
MTBCF:
MTTR:

Horizon

Horizon (Hélicoptère d'Observation Radar et d'Investigation sur Zone) is operating in X-Band battlefield surveillance and target designation radar on board the Aerospatiale Super Puma helicopter. It can be operated both autonomously and remotely from a ground station.

The radar consists of three units (transceiver, processor and control units) built into the helicopter, and a very wide, flat antenna mounted outside the helicopter. In flight, the complete antenna mechanism is set vertically under the helicopter and the antenna rotates mechanically. On landing, the antenna is folded up backwards under the helicopter tail and locked mechanically.

The development of Horizon radar begun in 1992. The radar is a downgraded (and cheaper) version of the Orchidée battlefield radar system developed in the mid-1980s. It was delivered to the French Army in the summer of 1996.