美国海军为潜水艇订购7套TB-37水面舰艇声纳系统

我去，原本AN/SQR-20改叫TB-37了，什么乱七八糟的编号系统。
TB原本只在潜艇拖阵上看到

http://www.defenseindustrydaily. ... al-detection-04956/

In the USA, towed array systems are made by a number of manufacturers: EDO/ITT, L-3, Lockheed Martin Undersea Systems, and the small specialist firm Chesapeake Science Corp. are a few of the firms involved.

Unlike a ship’s main bow-mounted sonar, towed arrays can quickly be fitted to any ship with a minimum of yard work. Towed arrays will also be necessary adjuncts to future unmanned anti-submarine vehicles, as their low weight and streamlined shape makes them usable by smaller platforms. Hence MFTA (Multi-Function Towed Array) production contracts since 2008, which are replacing America’s existing set of AN/SQR-19 TACTAS arrays.

The new AN/SQR-20 (now TB-37U) MFTA is the first new surface ship array to be built for the U.S. Navy in 25 years, and is configured as a long 3″ diameter array that can be towed behind surface ships. It is an active and passive sonar sensor, meaning it can listen silently for enemy submarines, or can send out a an active sonar ping and listen for the echoes. MFTA provides several enhancements over the existing AN/SQR-19 TACTAS, including better coverage, better detection capability, and better reliability.

The new towed array will be integrated with AN/SQQ-89Av15 underwater combat systems that are being installed aboard Arleigh Burke Class guided missile destroyers and Ticonderoga Class external link missile cruisers as part of their planned upgrades. It’s also slated for use on DDG-1000 Zumwalt Class “destroyers” as part of the AN/SQQ-90 dual-and sonar, and aboard the Littoral Combat Ships as part of their Anti-Submarine Warfare mission package.
RMS WLD-1
WLD-1 USV

While the array is described as “towed”, it can still be helpful for the array to have some attached movement capability. One of the key technical issues faced by towed arrays is the fact that knowing the shape of the array in the water is critical to interpreting its results. Unfortunately, currents, maneuvers by the towing vessel, and a myriad of other factors can change the array’s shape in the water. Self-monitoring via a pinging device and listening “birds” clipped along the array (birds because they measure “time of flight”) is a commonly used approach to calculating the array’s shape, and some kind of monitoring approach will continue to be necessary.

Having a streamlined node on the end with some maneuvering ability of its own – a UUV, for instance – can still be quite helpful, allowing operators to adjust the array line’s shape so it remains more useful more often. The US Navy specifically declined to discuss any aspect along these lines, saying that towing characteristics and features were not for public release.

The other unmanned mobility option would be to expand coverage by attaching the relatively small arrays to unmanned vehicles, allowing a warship to cover a much larger area, and to use unmanned vehicles as quiet advance scouts.

Lockheed Martin has confirmed to DID that part of the MFTA contract included an option involving the Remote Multi-Mission Vehicle (RMMV) snorkeling unmanned surface vehicle (USV). RMMV was expected to have a significant role to play in anti-submarine warfare (as the WLD-1), but the US Navy decided to restrict it to LCS’ counter-mine warfare package. That still leaves possibilities aboard USN cruisers and destroyers, but unless the USV improves significantly, WLD-1 probably would be more of a position adjustment aid than a towing platform. Overall USV technology, on the other hand, is expected to improve significantly in the coming decades. It’s very likely that some kind of USV or UUV system will eventually be deployed with MFTA as an independent sensor set.

我去，原本AN/SQR-20改叫TB-37了，什么乱七八糟的编号系统。
TB原本只在潜艇拖阵上看到

http://www.defenseindustrydaily. ... al-detection-04956/

In the USA, towed array systems are made by a number of manufacturers: EDO/ITT, L-3, Lockheed Martin Undersea Systems, and the small specialist firm Chesapeake Science Corp. are a few of the firms involved.

Unlike a ship’s main bow-mounted sonar, towed arrays can quickly be fitted to any ship with a minimum of yard work. Towed arrays will also be necessary adjuncts to future unmanned anti-submarine vehicles, as their low weight and streamlined shape makes them usable by smaller platforms. Hence MFTA (Multi-Function Towed Array) production contracts since 2008, which are replacing America’s existing set of AN/SQR-19 TACTAS arrays.

The new AN/SQR-20 (now TB-37U) MFTA is the first new surface ship array to be built for the U.S. Navy in 25 years, and is configured as a long 3″ diameter array that can be towed behind surface ships. It is an active and passive sonar sensor, meaning it can listen silently for enemy submarines, or can send out a an active sonar ping and listen for the echoes. MFTA provides several enhancements over the existing AN/SQR-19 TACTAS, including better coverage, better detection capability, and better reliability.

The new towed array will be integrated with AN/SQQ-89Av15 underwater combat systems that are being installed aboard Arleigh Burke Class guided missile destroyers and Ticonderoga Class external link missile cruisers as part of their planned upgrades. It’s also slated for use on DDG-1000 Zumwalt Class “destroyers” as part of the AN/SQQ-90 dual-and sonar, and aboard the Littoral Combat Ships as part of their Anti-Submarine Warfare mission package.
RMS WLD-1
WLD-1 USV

While the array is described as “towed”, it can still be helpful for the array to have some attached movement capability. One of the key technical issues faced by towed arrays is the fact that knowing the shape of the array in the water is critical to interpreting its results. Unfortunately, currents, maneuvers by the towing vessel, and a myriad of other factors can change the array’s shape in the water. Self-monitoring via a pinging device and listening “birds” clipped along the array (birds because they measure “time of flight”) is a commonly used approach to calculating the array’s shape, and some kind of monitoring approach will continue to be necessary.

Having a streamlined node on the end with some maneuvering ability of its own – a UUV, for instance – can still be quite helpful, allowing operators to adjust the array line’s shape so it remains more useful more often. The US Navy specifically declined to discuss any aspect along these lines, saying that towing characteristics and features were not for public release.

The other unmanned mobility option would be to expand coverage by attaching the relatively small arrays to unmanned vehicles, allowing a warship to cover a much larger area, and to use unmanned vehicles as quiet advance scouts.

Lockheed Martin has confirmed to DID that part of the MFTA contract included an option involving the Remote Multi-Mission Vehicle (RMMV) snorkeling unmanned surface vehicle (USV). RMMV was expected to have a significant role to play in anti-submarine warfare (as the WLD-1), but the US Navy decided to restrict it to LCS’ counter-mine warfare package. That still leaves possibilities aboard USN cruisers and destroyers, but unless the USV improves significantly, WLD-1 probably would be more of a position adjustment aid than a towing platform. Overall USV technology, on the other hand, is expected to improve significantly in the coming decades. It’s very likely that some kind of USV or UUV system will eventually be deployed with MFTA as an independent sensor set.

TB-37（我还是习惯称为AN/SQR-20）MFTA是给水面舰的，包括在柏克3/提康德罗家改进计画的AN/SQQ-89（V）15反潜作战系统、DDG-1000的AN/SQQ-90反潜作战系统以及LCS的反潜包