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Passive Acoustic Surveillance and Monitoring
APS has conceptualized, designed, and fabricated sensors and subsystems for both airborne and underwater passive acoustic surveillance. These include vector sensors for deep submergence applications and a vector sensor towed array for torpedo defense applications. APS has a unique and proven capability to fabricate specialized transducers for harsh operating conditions as well as vector sensor towed arrays.
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Photograph showing a vector sensor APS developed for use in a 32-element line array that will be deployed in deep water. The sensor has the lowest electronic noise floor (i.e., 40 dB re 1 ěPa2/Hz) and deepest submergence capability (i.e., 6 km) of any vector sensor devised for the passive ASW frequency range. Work sponsored by ONR Code 321.
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Illustration showing how a vector sensor towed array can be used in torpedo defense applications to discriminate between left and right contacts. Under sponsorship from ONR Code 321 via the STTR program, APS is building a vector sensor towed array to validate the numerical model shown above.
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