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AN/APS-15

Description of the radar set, tactical-technical characteristics

Figure 1: AN/APS-15

Figure 1: AN/APS-15

Specifications
frequency: 9 375 MHz
(X-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 622 Hz
pulsewidth (τ): 1 µs
receive time:
dead time:
peak power: > 40 kW
average power: 50 W
instrumented range: 100 mi (≙ 160 km)
range resolution:
accuracy: ± 150 m
beamwidth:
hits per scan:
antenna rotation: 20 rpm
MTBCF:
MTTR:

AN/APS-15

AN/APS-15 (alias H2X) was operating in X-Band navigation and search radar used during the end of World War Ⅱ. It was used in the B-17 “Flying Fortress” as bombing set with the nick name “Mickey”.

The antenna was a parabolic reflector fed by a Cutler feed. The reflector was modified with an additional lower lip to produce a Cosecant squared type beam in elevation. Since the radar was mounted in a small radome upside down under the fuselage of the airplane, an inverted cosecant squared pattern was created.