The Underwater Acoustic Signature Analysis System (UASA) is an Acoustic Intelligence (ACINT) system that may be located on land or at sea.

The UASA performs low frequency sonar data collection, processing, analysis, classification, recording, and database management (LOFAR). The LOFAR data, which consists of acoustic signals radiated by various sources, is received and collected by naval and air platforms operating passive sonar systems such as submarines, surface platforms with towed arrays, air platforms using sonobuoys, fixed bottom-moored sonar systems, etc.

Once the LOFAR sonar data is collected, it is analyzed by the central ACINT laboratory, and the outcome is an accurate acoustic signature of the target. Following this process, the acoustic signature is input into the platform’s acoustic signature database, where it is used as an aid for real-time classification.