AN/APQ-164
Description of the radar set, tactical-technical characteristics
Figure 1: AN/APQ-164
| Specifications | |
|---|---|
| frequency: | X-Band |
| pulse repetition time (PRT): | |
| pulse repetition frequency (PRF): | |
| pulsewidth (τ): | |
| receiving time: | |
| dead time: | |
| peak power: | |
| average power: | |
| instrumented range: | 160 NM (≙ 300 km) |
| range resolution: | |
| accuracy: | |
| beamwidth: | |
| hits per scan: | |
| antenna rotation: | |
| MTBCF: | |
| MTTR: | |
AN/APQ-164
AN/APQ-164 is operating in the 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.