Multifrequency traverse-scan sonar for monitoring marine bioresources in shallow water using nonlinear acoustics technologies (MTSS) is intended for horizontal location of fish accumulations and single fishes, monitoring of marine bioresources in adverse search and fishing conditions of shallow water.

MTSS is intended for consumers conducting research (search, detection, monitoring, evaluation) and catch of marine bioresources in inland waters and on the offshore shelf.

Currently, only echo sounders (vertical location) are used to detect and monitor bioresources in shallow water. The scanned area of the water space in the echo sounders is very limited. At shallow depths, when the vessel moves, the “scaring effect” has a significant effect on fish behavior. Devices of horizontal location (“conventional” sonars) with a large field of scan are extremely inefficient due to reverberation and multiple reflections of acoustic signals from the bottom and the surface. (more…)