AN/SQR-19 Tactical Towed Array SONAR (TACTAS)
The AN/SQR-19 Tactical Towed Array SONAR (TACTAS) provides very long-range passive detection of enemy submarines. The surface force slowly evolved from a sensor/weapon suite based on the SQS-26, ASROC, and LAMPS I to one that included by the mid 1980s a passive towed array and the longer range LAMPS III. The LAMPS/towed array combination revolutionized surface ship ASW capabilities by combining the detection ranges heretofore only achieved at the tactical level by submarines deploying large, below layer, passive arrays with the rapid, long range prosecution capabilities provided only by air ASW assets. Waypoints in this transformation included: first experiments and initial deployments with ITASS surveillance arrays towed from VDS fish on specialized surveillance ships in 1970; first experiments and deployments with interim tactical towed arrays (SQR-18) on USS Moinester (FF 1097), and first experiments and deployments of a higher speed tactical array (SQR-19) on USS Moosbrugger (DD 980) in 1982.
TACTAS is a long cable full of microphones that is towed about a mile behind the ship. It is towed so far behind the ship so as to not let noise radiating from the shipitself interfere with the noise picked up from targets. Using that noise can determine exactly what ship or submarine is being tracked. The AN/SQR-19B Tactical Array SONAR (TACTAS) is a passive towed array system which provides the ability to detect, classify, and track a large number of submarine contacts at increased ranges. TACTAS is a component sensor of the AN/SQQ-89(V)6 ASW Combat System, and provides significant improvements in passive detection and localization, searching throughout 360 degrees at tactical ship speeds. Processing of complex TACTAS data is performed by the largest computer program assembly ever developed for surface ship anti-submarine warfare.
Meteorology and Oceanography Center Detachment TACTAS support products describe oceanographic and acoustic conditions (using range dependent models) in the prosecution area for towed array ships tasked by CTF-69 for ASW operations. This message is provided when own ship Sonar In-situ Mode Assessment System (SIMAS) or the Mobile Environmental Team's Mobile Oceanographic Support System MOSS) are not available. It is tailored to the specific towed array carried onboard. The message is transmitted prior to the start of a prosecution and daily thereafter or as requested.
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