NEC Corporation has developed an improved variant of its sonar-based underwater invasion warning system (UIWS).
Speaking at the MAST Asia 2017 exhibition in Tokyo, Makoto Ogawa, a member of the corporation's Radio Application Division, said that the new model will provide a more reliable deterrent against underwater threats posed to critical infrastructure in coastal areas.
"[Strategic] targets such as oil rigs, ports, power plants, or harbours are exposed to often neglected underwater threats. The [second-generation] UIWS aims to mitigate those threats by detecting their reflected acoustic signal.
"Defending coastal facilities with the sole use of radars or cameras generates a security hole, because radio and light waves do not perform well under water," said Ogawa.
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