Automatic Detection and Classification Device.
DEPARTMENT OF THE NAVY WASHINGTON DC
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This invention relates to automatic detection and classification devices and more particularly to such devices, hereinafter referred to as ADAC, having a gain loop providing a more constant amplitude at its output, a heterodyne correlator to attenuate noise burst other than the transmitted sonar pulses and to provide for utilization of circuits having greater simplicity, reliability, and efficiency.
- Acoustic Detection and Detectors