The Littoral Surveillance Radar System (LSRS) is a Navy intelligence, surveillance, reconnaissance and targeting system consisting of Raytheon's AN/APS-149 littoral and overland surveillance radar, initially fielded aboard the service's P-3C Block Modification Update Program (BMUP) maritime patrol and surveillance aircraft. The radar is mounted in a ventral pod attached to its host platform's belly by at least three attachment points. It is a wide-aperture, Active, Electronically-Scanned Array (AESA) sensor that has a moving target indicator [GMTI] capability. The APS-149 is designed primarily for the targetting-grade tracking of moving targets on land and at sea. LSRS operates from P-3C Orions and can be used to track targets on land or sea, and to provide images of those targets to intelligence analysts.