Real Time Systems, Inc.

Teledyne Instruments, Inc.

Teledyne Real Time Systems, Inc.

William Allen Nance

Daniel Eugene Hobson

Keith Andrew Kunz

A near-field hydrophone is disclosed. The near-field hydrophone includes a housing, a piezoelectric element configured to produce an analog signal in response to an acoustic signal generated by the release of compressed air into water, an analog circuit coupled to the piezoelectric element, wherein the analog circuit is configured to receive the analog signal and to produce a conditioned analog signal, an analog-to-digital converter configured to receive the conditioned analog signal and to produce a digitized form of the conditioned analog signal, and a processor coupled to a memory circuit and to the analog-to-digital converter, wherein the processor is configured to control the operation of the analog-to-digital converter and to provide a digitized serial communication output corresponding to the digitized form of the conditioned analog signal. The piezoelectric element, the analog circuit, the analog-to-digital converter, the processor, and the memory circuit are located within the housing.

Digital seismic source signature near-field hydrophone

A marine air gun generates an acoustic signal in water, for example, during a marine seismic survey. The marine air gun includes digital electronic circuitry. The digital electronic circuitry may control an actuator of the marine air gun, digitize and store data from sensors located on or near the marine air gun, send and/or receive digital communications, store and/or output electrical energy, and/or perform other functions. A marine seismic source system that includes multiple air gun clusters may have a separate digital communication link between a command center and each air gun cluster. Each communication link may provide power and digital communication between the command center and one of the air gun clusters.

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Fredericksburg, TX, United States of America

William Allen Nance