Method for testing a seismic marine cable

Method for testing cableless seismic digital field recorders

Method of determining optimal seismic multistreamer spacing

Method of monitoring the state of extended shell

Method of selecting ultrasonic transducers for use in ultrasonic

Method of testing an acoustic array antenna

Method of troubleshooting an underwater acoustic transducer arra

Method to calibrate acoustic instruments, and calibration system

Methods and systems for calibrating acoustic receivers

Multi-channel acoustic simulator

Navigation sonar system dockside simulator

Passive acoustic tornado detector and detection method

Phase and amplitude calibration system for electromagnetic propa

Place calibration of sonar receive array

Planar wavefront simulator

Power switching method for marine seismic acquisition systems

Printed circuit board magnetic head for magneto-optical recordin

Processing method for calibrating a hydrophone-geophone sensor p

Pseudo-random noise generator calibration for acoustic hydrophon

Real-time calibration acoustic array