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Lieutenant General
By itself the robot is not a weapon or sensor.But in order to buil the infrastructure of underwater great wall you need the tool And that is exactly what this robot is for.So today news in big step in realization of underwater great wall
Here is the actual video
And here is the robot in work to lay cable and buried it under the sand
And here the future look like for underwater great wall
The Great Underwater Wall Of Robots: Chinese Exhibit Shows Off Sea Drones
Chinese Robot Submarines Blanketing the Ocean Floor Soon
By June 22, 2016
Underwater Great Wall of China
The Underwater Great Wall may be centered around stationary sensors on the ocean bed, but autonomous unmanned underwater vehicles will be a critical enabler in not just tracking enemy submarines, but finding them. Also note the large AUV's reflection on the display glass.
The Chinese Navy, the PLAN, appears to be following in the footsteps of its sister service, the People's Liberation Army Air Force, in making growing investments in unmanned surface and underwater systems, aka "drones." A new Chinese exhibit shows the scale of the potential future.
A Wide Range of UUVs
China is experimenting in building autonomous UUVs of all shapes and sizes, looking to make them work together with each other, and Chinese warships too.
One area where unmanned underwater vehicles (UUV) and unmanned surface vehicles (USV) would make a splash is in Chinese anti-submarine warfare (ASW) efforts. ASW capabilities have been a longstanding weak spot for the PLAN, leaving it at a disadvantage to American and Japanese attack submarines. As a response, the China State Shipbuilding Corporation (CSSC), which builds virtually all PLAN warships, has proposed an "Underwater Great Wall" of sensors, positioned on the seabed floor, to listen for enemy submarines. (The US had a similar system on the Atlantic Ocean floor to listen for Soviet submarines.) Such underwater listening posts may already have been installed near the giant PLAN base at Sanya, Hainan Island in the South China Sea. On a more optimistic note, CSSC suggested that an Underwater Great Wall would be useful for warning against natural disasters like tsunami, and could be used to collect research data on marine life and geology.
System of Systems
Future Chinese anti-submarine warfare systems will rely on a wide arsenal of autonomous and surface unmanned vehicles, in addition to acoustic (and other types of) sensors installed on the ocean floor.
In addition to active and passive sensors located up to 3,000 meters underwater, the Underwater Great Wall will be supported by a wide range of USVs. Chinese researchers intend that these autonomous USVs will be able to work in conjunction with the seabed sensor picket line, and autonomously locate and track enemy submarines.
Continuing research on these technologies can also help to develop a future base in either the moon and/or Mars.