The APQ-181 is the multimode pulse-Doppler radar for the B-2 longrange stealth bomber. It employs a low-RCS passive ESA antenna and incorporates advanced LPI features. Except for that and the fact that, like the APQ-164, it gives the aircraft the autonomous ability to navigate safely around hazards and use them to mask defensive systems, very little can yet be said about the radar at an unclassified level.

Chapter Contents:

• B-2 Bomber (APQ-181)
• B-1B Radar (APQ-164)

Inspec keywords: Doppler radar; radar cross-sections; military radar; aircraft antennas; aircraft navigation; military vehicles

Other keywords: low-RCS passive ESA antenna; hazards; multimode pulse-Doppler radar; APQ-181; strategic bombing; B-2 longrange stealth bomber; safe navigation; advanced LPI features; mask defensive systems; APQ-164; aircraft

Subjects: Radar and radiowave systems (military and defence); Radionavigation and direction finding; Transportation (military and defence); Single antennas