CEE HydroSystems made a hardware switch to ultra-low noise components to allow increased signal amplification, and their bottom tracking is continuously being updated. The current evolving methodology relies more on signal gain combined with short pulse lengths to increase precision and overall performance. The result is excellent tracking in very shallow water; reliable, repeatable, and stable down to 4-5" below the transducer! They implement an adaptive blanking feature that works out the minimum measurable depth and allow everything up to that point. So, no need for the operator to enter a manual blanking distance to slice off the ringing. It’s automatic, built-in.
Also, when moving up and down very steep slopes, where historically SBES can get confused and lose intensity and therefore lose bottom detection, the CEE echo sounders maintain continuous tracking up and down steep slopes. Their Kalman Filter helps minimize spurious short-term spiking.
Sea Trials in rough conditions (SS3)
Two (2) WAM-V® 16 vessels teamed up with a crewed survey vessel to survey Lake Michigan-Huron on a NOAA hydrographic survey project. The WAM-V® autonomously followed the crewed survey vessel to provide 3x sonar coverage with the same personnel. Lateral and direction-of-travel offsets were adjusted in real-time to ensure proper bottom coverage was achieved.
Portable Baywei M7 Multibeam for open vessels of opportunity or USV's
Baywei M7 - easy user interface and operation, in very shallow water with high current
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