| 摘要 |
FIELD: fishery. ^ SUBSTANCE: method involves building and emitting information and energy sonar signals for controlling sea mammal behavior (including sea mammals having no natural predators) when catching fish in great volume of aquatic medium. The control actions are done in effective and short-term manner in frequency bandwidth restricted with frequency bandwidth being maximum sensitivity to fishes selected as fishing object. The information signals are built in unit for producing information signals in the channel for producing and emitting information signals being like sonar signals emitted by selected fishing equipment, fishing-boat body, systems and mechanisms when moving to fishing area or setting fishing gears. At the same time, several autonomous marine systems are installed and set in operation far from fishing area in water column at different horizons by switching on electric current. Light emission signals are sent at the same time according to program executed by the unit for producing and amplifying information signals. The sonar signals and light signals have an effect upon sea mammals and modify their behavior characteristics. ^ EFFECT: enhanced effectiveness of control. ^ 7 dwg |
