AN/SQS-29

The AN/SQS-29 is an active/passive search and attack sonar. It is a development of the AN/SQS-4 Mod 1 sonar.

The SQS-29 is equipped with tri-beam rotating directional transmission (RDT) that emits a succession of three intense, rotating beams for increased range, and with Acoustic Short-Pulse Echo Classification Technique (ASPECT) that facilitates classification by emitting a series of very short pulses in a steered beam, resolving the target into several recognizable parts. ...