Detection of broad-band targets on sonar time-bearing displays requires that a threshold be estimated. the estimate is degraded by leakage through the beam-former sidelobes. time-bearing compensation (tbc) decreases the effect of sidelobe leakage, and thereby improves the threshold estimate and… More

In the operation of passive sonar systems, some Contacts Of Interest (COIs) radiate detectable amounts of broad band energy; on the other hand, their narrow band components are too weak for initial detection, yet are required for classification. Our new approach to such systems is based on envelope… More

Visidyne has discovered a now approach to determining whether or not an acoustic contact is submerged. Our approach has distinct advantages over previous methods; these add up, ultimately, to a higher degree of automation (at equal or better performance) and therefore a reduction in the cost of… More