DEVICE FOR KEEPING salmon going to spawn

摘要

The invention relates to industrial fishing, in particular to devices for monitoring Pacific salmon approaches to coastal areas for future spawning. An apparatus for accounting salmon going to spawn comprising a network of independent floating sonar recorders consisting of software controlled oscillator-receiver, the speaker array antenna, an analog-digital converter, and a packet transmission communication radio channel unit (radio module) to external control and measuring system, wherein as the acoustic array antennas take the low frequency acoustic antenna having a circular directivity characteristic in the horizontal hydrochloric plane while hydroacoustic registers connected in series, and the end provided with the armature. The apparatus provides a more efficient, high quality, environmentally safe, efficient and less costly control (registration) coming to spawn of salmon in real practical conditions Far salmon fishery. 2 FIG.