NORBIT Wide Band Multibeam Sonar

The NORBIT Wide Band Multibeam Sonar (WBMS) is the most compact high resolution wide-swath multibeam sonar available. With a sonar dry-weight of less than 4.5kg (10lbs), beam widths of only 0.9°, and low power draw the stand-alone multibeam sonar easily mounts to any sized survey platform and may be powered by a small battery (ex. laptop extension battery pack) or standard AC plug.
The WBMS emits a frequency modulated (FM) sound wave centred at 400kHz (the optimized frequency). From the returning sound energy, 256 or 512 beams are formed within a user-selectable 5° to 210° fan shaped swath using the integrated sound speed probe and curved receiver array that allows for narrow beams with significantly less beam spreading than linear arrays. Repeatable bottom detections from 0.2m to 280m (Seattle, WA USA – salinity @ 29ppt – water temperature 11°C) are determined using automatic gain compensation, adaptive gating technology, and amplitude and phase proprietary algorithms for bottom detections. All processing and export of time-stamped bottom detection occurs within the sonar head. The system requires very little user intervention to achieve clean repeatable bathymetry.
The sonar is connected via a single sonar cable that provides power and Ethernet data link between the sonar wet-end and a small Sonar Interface Unit (SIU). From the SIU, a single Ethernet cable to a laptop or Acquisition PC is required to transmit control commands to the sonar, receive the sonar records and receive the INS data for iWBMS product.
The NORBIT WBMS is unique to the industry as the first platform designed from the start to be a cylindrical array wideband system with frequency modulated (FM) transmission signals. With latest FPGA circuits, integrated sound speed probe, and fresh engineering, the system provides the resolution and capabilities of a much larger and more complicated system. Efficiency savings begin with installation: the compact (and lightweight) form-factor enables for simpler, less robust, mounting infrastructure than earlier generation multibeam sonar systems. Low power requirements allow added flexibility on very small survey vessels as well as any vessel of opportunity.

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