Description of the radar set, tactical-technical characteristics
Figure 1: AN/APQ-164
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):|
|instrumented range:||160 NM (≙ 300 km)|
|hits per scan:|
AN/APQ-164 is operating in X-Band low observable multimode terrain-following, navigation and weapon control radar installed in the US Air Force B-1B “Lancer” aircraft. The AN/APQ-164 in the B-1B is a dual-redundant system, with two complete and independent sets of LRUs, except for the phased-array antenna. It provides a precise all-weather automatic terrain following and terrain avoidance in low altitudes. It is a modified AN/APG-66 pulse doppler radar with a variety of beam configurations and scanning modes.
The system uses an elliptical passive element phased array. The antenna dimension is 1 118 × 559 mm. It has 1 526 phase control modules that can be scanned electronically in both axes to ± 60°. The transmitter is of TWT-amplifier type, similar to AN/APG-68.
The system was first flown on a B-52 in 1977. The first production delivery was in 1984, and more than 120 systems have been delivered. The radar is being gradually replaced by the SABR-GS, a successor to the AN/APG-83, since 2015.