Advanced Airborne Sensor

The Advanced Airborne Sensor AAS is a multifunction radar installed on the Boeing P-8 Poseidon maritime patrol aircraft. The radar is built by Raytheon as an AESA follow-on to the Littoral Surveillance Radar System LSRS, APS-149 also built by Raytheon.

It is a solid-state, active electronically scanned array (AESA) radar with multiple functions: Synthetic Aperture Radar (SAR), Inverse Synthetic Aperture Radar and Moving Target Indication modes.