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AN/APG-71

Description of the radar set, tactical-technical characteristics

Figure 1: AN/APG-71

Figure 1: AN/APG-71

Specifications
frequency: X-band
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ): 0.4 and 50 µs
receiving time:
dead time:
peak power: 10 kW
average power: 500 W
instrumented range: 140 NM (≙ 260 km)
range resolution:
accuracy:
beamwidth:
hits per scan:
antenna rotation:
MTBCF:
MTTR:

AN/APG-71

AN/APG-71 is the digital upgrade of radar section of the AN/AWG-9, both used as nose radar in the fighter F-14 “Tomcat”. The radar incorporates a number of modes including velocity search (to provide maximum detection range capability against nose aspect targets), range-while-search (to detect all-aspect targets), and track-while-scan (which, when combined with an autonomous missile such as AIM-120, gives the aircraft a fire-and-forget capability).

The primary radar antenna is a mechanically scanning monopulse array, consisting of slots in a waveguide system. The visible dipoles in Figure 1 are part of the IFF interrogator.