Hydroid delivers high-resolution interferometric synthetic aperture sonar
Hydroid, Inc., a subsidiary of Kongsberg Maritime, announced it has delivered what it says is the first modular bathymetry payload with the new HISAS 2040, a high-resolution interferometric synthetic aperture sonar (HISAS). The system was delivered to the Naval Oceanographic Office (NAVOCEANO).
The 2040 bathymetry payload was installed on a Hydroid REMUS 600 autonomous underwater vehicle (AUV). The system was delivered fully integrated with navigation and is calibrated to provide full swath, gap-filled imagery, and bathymetry in a small form factor, modular AUV package. The HISAS 2040 sonar provides improved resolution and offers high-performance real-time processing and sonar quality assessment.
The HISAS 2040 can build up a series of synthetic aperture sonar (SAS) images that represent different observation angles. Through this multi-aspect imaging, an AUV operator can obtain an extra dimension in the data set since many complex objects have a high aspect-dependent echo and shadow structure.
"The HISAS 2040 sonar brings an entirely new dimension to the synthetic aperture sonar market," said Duane Fotheringham, President of Hydroid. "Compared to traditional sonars, the HISAS 2040 sonar reduces survey time and provides superior data quality, which is particularly useful in oceanographic surveying and mine countermeasure operations. We are excited to be offering this new Kongsberg technology on our REMUS vehicles."
The frequency range of the HISAS 2040 is 220-280 kHz, and the typical operational-performance range is 130 m (426 ft) on each side of the vehicle at 2 m/s (6.5 ft/s). The system has a practical resolution of 5 cm × 5 cm (2 in × 2 in) at all ranges.
For more information, visit www.hydroid.com.