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AN/APG-78

Description of the radar set, tactical-technical characteristics

Figure 1: AN/APG-78

Figure 1: AN/APG-78

Specifications
frequency: Ka-Band
pulse repetition time (PRT):  
pulse repetition frequency (PRF):  
pulsewidth (τ):  
receive time:  
dead time:  
peak power:  
average power:  
instrumented range: 8 … 12 km
range resolution:  
accuracy:  
beamwidth:  
hits per scan:  
antenna rotation:  
MTBCF:  
MTTR:  

AN/APG-78

The AN/APG-78 “Longbow” is a short range, operating in Ka-Band millimeter-wave multimode surveillance and fire-control radar and target acquisition system.

The AN/APG-78 and radar frequency interferometer are housed in a dome located above the main rotor. The radome's raised position enables target detection while the helicopter is behind obstacles (e.g. terrain, trees or buildings). The AN/APG-78 is capable of simultaneously tracking up to 128 targets and engaging up to 16 at once, an attack can be initiated within 30 seconds. A radio modem integrated with the sensor suite allows data to be shared with ground units and other Apaches; allowing them to fire on targets detected by a single helicopter.

The radar is fielded with the Apache AH-64 Attack Helicopter system in the US Army.

Picture gallery of AN/APG-78

Figure 2: AN/APG-78 without radome

Figure 3: Apache AH-64D Helicopters

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