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PROSAS™ – Real-Time Synthetic Aperture Sonar Processor

Synthetic Aperture Sonar
SAS is a revolutionary underwater imaging technique that provides extraordinary area coverage, imagery, and bathymetry at high spatial resolution, for a fraction of the cost of conventional systems. PROSAS™ combines SAS technology with leading-edge automatic target recognition (ATR) and anomaly detection processing to provide high-quality seafloor surveillance.
The first automated, full-swath, real-time synthetic aperture sonar (SAS) processor
High-speed, high-resolution acoustic imaging system that coherently combines the returns from multiple pings to synthesize a large acoustic aperture
System delivers sonar imagery with unprecedented resolution independent of range and frequency

Applications
Seafloor mapping
Economic exclusion zone mapping
Mine hunting
Long-range surveillance
Maritime search and investigation
Marine construction
Oil and gas exploration
Ecological/environmental survey
Telecommunications and pipeline survey

Features
Along-track resolution independent of range
Over 25 times greater resolution at range with a 300% increase in area coverage compared to conventional sidescan sonar
Applies to full range of sonars, from high frequency, short-range to low frequency, long-range anti-submarine warfare
Inch-scale resolution to 500 yards, yard-scale resolution to 25 kiloyards
Motion compensation, image formation, and auto-focusing algorithms
Customization services allow interferometric, height-finding, and sub-bottom processing
Comparison of side-looking sonar and SAS image of a rock field. These images were processed during the Oslo sea trials. The SAS image provides greater clarity and allows for closer inspection of the clutter field to identify anomalous items.
Modular – PROSAS is embedded within an adaptable middleware architecture, allowing users to specify a system that exactly meets their requirements. Modules include: ATR, anti-submarine warfare (ASW), mine hunting, and bathymetry.
These PROSAS partners offer additional SAS system elements to provide tailored solutions: Edge Tech, Ultra Electronics, Triton Imaging, Inc., and Oceanic Imaging Consultants
PROSAS imaging technology is used in the MINESCOUT workstation, which provides ATR for combined analysis of SAS, side-looking sonar (SLS), and non-acoustic sensor inputs from autonomous unmanned vehicles (AUVs) for mine detection