China has built a database of sound data from warships that can help Chinese submarine crews to re-acquire a surface vessel contact, the ministry of national defence said.
The system was recently tested during a hypothetical confrontation between a submarine and a surface warship in which the target alternated its course and speed to mask its movements.
Chinese sonar operators identified the target by comparing information from the database with the contact’s acoustic characteristics, including its frequency and speed.
The system will enable China’s People’s Liberation Army Navy (PLAN) to ensure a sonar contact on a surface vessel underwater.
China Builds Database From Naval Training
The sounds produced by a ship’s propulsion system and machinery can be picked up underwater. These will vary depending on the vessel’s speed, power, and other factors.
Chinese naval personnel have been gathering this information during training exercises, as well as during actual training and field operations.
Rather than being saved by individual sonar operators, this
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