DARPA’s TEAC program developed phased-array sonar technology for Unmanned Underwater Vehicles (UUW or UUV) to establish a network of distributed sonars for Anti Submarine Warfare

Sonars are one of the primary systems for detection and tracking of submarines in Anti Submarine warfare. However modern nuclear and diesel electric submarines have become very stealthy and quiet. Another challenge is diesel-electric submarines operating in littoral waters which generate high false alarm rates (FAR). One of the ways of overcoming such challenges and detecting stealthy and quiet submarines is Multi static sonar. These systems rely on Network of Active and Passive sonars collaboratively tracking the stealthy targets.