Defensa - Royal Norwegian

Underwater acoustic noise measurement of vessels

The acoustic range at Heggernes in Norway measures the acoustic signature of NATO vessels – one of only a few facilities in the world capable of these studies. And Brüel & Kjær plays a key role.

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A vessel’s acoustic signature provides recognition to friends and enemies alike. The acoustic range at Heggernes in Norway measures all types of NATO naval vessels – one of only a few facilities in the world capable of these studies. And Brüel & Kjær plays a key role.

Challenge

In order to characterize the acoustic signature of NATO submarines and surface vessels, the Heggernes range needs to perform two types of acoustic ranging tests: static and dynamic. Reliability and accuracy are essential and depend first and foremost on the quality of the hydrophones and acquisition software.

Solution

The Brüel & Kjær Underwater Acoustic Ranging System (UARS) provides an integrated solution supporting navies with the task of managing and maintaining the acoustic stealth of their submarine and surface fleet. Coupled with highly customized PULSE software, the data-collection process is not just accurate, but also highly automated.

Results

The unquestionable quality of the data allows better comparison of vessels in the water with their specifications on paper. According to Kjell Johnsen of the Royal Norwegian Navy, “When we tell them that we use Brüel & Kjær, there are no discussions concerning the accuracy of the data.”

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