Discharge circuit, and use thereof in a method and in apparatus
Discrete amplitude shading for lobe-suppression in discrete arra
Displacement amplification mechanism for piezoelectric elements
Displacement current method and apparatus for remote...
Distributed acoustic sensor
Distributed array hydrophone
Distributed, soft-bodied, towable, active acoustic system
Double mass-loaded high power piezo-electric underwater transduc
Double piston acoustic transducer with selectable directivity
Double-ended geophone
Doubly resonant push-pull flextensional
Driving device for a hydroacoustic transmitter
Driving means for acoustic marine vibrator
Dual axis transducer
Dual beam doppler shift hydrophone
Dual frequency sonar transducer assembly
Dual gimbal geophone
Dual response acoustical sensor system
Dual rope vibration isolation module for towed hydrophone stream
Dual shuttle air gun