초록 ▼

The disclosed embodiments provide an acoustic deterrent system and a method for repelling sea mammals from a region of water. The system consists of one or more acoustic impulse sources spatially distributed underwater around the perimeter of the fish farm or other region to be protected. Each sourc

The disclosed embodiments provide an acoustic deterrent system and a method for repelling sea mammals from a region of water. The system consists of one or more acoustic impulse sources spatially distributed underwater around the perimeter of the fish farm or other region to be protected. Each source is capable of generating an acoustic signal and a controller determines the firing time for each source to produce signals, which may include precisely timed wave trains of superimposed tones on a broadband low frequency signal, which are believed most effective in deterring seals, sea lions and other carnivorous mammals. The system may further include a sensing device to determine the presence of marine mammals so that the acoustic deterrent can be initiated on demand.

대표청구항 ▼

What is claimed is: 1. A method for deterring mammals from remaining in a region of water, comprising:detecting the presence of mammals near the region; andin response to such detection, producing broadband acoustic signals from at least one fluid-powered acoustic impulse source regulated by a contr

What is claimed is: 1. A method for deterring mammals from remaining in a region of water, comprising:detecting the presence of mammals near the region; andin response to such detection, producing broadband acoustic signals from at least one fluid-powered acoustic impulse source regulated by a controller.