Klein Associates, Inc., a leading sensor technology company, which provides high-resolution sonar systems, marine navigation systems and waterside security and surveillance systems.

AUV Digital Side ScanSonar System

 

System 5000 AUV (V2) High Resolution Dynamically Focused, Multi-Beam Side Scan Sonar

The Series 5000 AUV (V2) Sonar System is a simultaneous multiple swath-forming, side looking sonar intended for high speed, high resolution survey use.  The two primary drawbacks of conventional side looking sonars, along track resolution and towing speed limitation, have been addressed by simultaneously forming multiple dynamically focused beams per side, per ping. This allows greater towing speeds without the usual loss of bottom coverage, while maintaining high resolution. Also, the formed swaths are focused dynamically with across-track range, thereby offering an inherently improved along-track resolution over unfocused systems.

The Series 5000 V2 departs from previous multi-bream systems in that the swath forming process is implemented digitally using digital sonar processing (DSP), rather than analog delay lines, phase shifters or multipliers and adders.  The primary advantage of this technique is a reduction in the size and wight of the towfish. This affords a concomitant reduction in the size of the required survey vessel and ancillary equipment, such as a winch and crane.  Other advantages include more flexibility in the swath processing, allowing software control of operating parameters. Previously this would have required hardware changes.

The Series 5000 AUV (V2) architecture is composed of the Sonar Electronics and the Sonar Processor. The Sonar electronics contains the transducer arrays and electronic subsystems for transmission, reception, data acquisition, and telemetry.  The Sonar electronics also includes standard and optional sensors for the monitoring of the AUV position and motion dynamics, pressure, depth and altitude (acoustically measured), temperature, and other pertinent information. The Sonar processor processes the data from the Sonar electronics. It also serves as a control/data/power interface with the AUV host electronics over an Ethernet connection.

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