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AN/APS-115

Description of the radar set, tactical-technical characteristics

Figure 1: Lockheed P-3C Orion aircraft

Figure 1: Lockheed P-3C Orion aircraft

Specifications
frequency: 8.5 … 9.6 GHz
(X-band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 1 600 or 400 Hz
pulsewidth (τ): 0.5 or 2.5
receiving time:
dead time:
peak power: 143 kW
average power:
instrumented range: 200 NM (≙ 370 km)
range resolution:
accuracy:
beamwidth: 2.4°
hits per scan:
antenna rotation: 12 or 6 rpm
MTBCF:
MTTR:

AN/APS-115

The AN/APS-115 is an operating in the X-band airborne search radar used primarily for maritime patrol and Antisubmarine Warfare (ASW) operations. It provides detection and surveillance of submarines operating under snorkel conditions, surface vessels, and aircraft.

The system uses two antennas, one in the nose and one in the tail of the Lockheed P-3C Orion aircraft. The antennas scan 45° sectors and can be tilted through a −20 to +10 degrees from aircraft horizontal. The antennas radiate the transmitter pulses in either a pencil beam mode (2.4° × 3.6°) or a cosecant squared beam mode (2.4° × 20°).

AN/APS-115 is a further development of the AN/APS-80A. It achieved initial operational capability in 1969 in early P-3C aircraft and remained operational until 1985.