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METHOD FOR PROTECTING SEA MAMMALS OF DOLPHIN SUBFAMILY FROM FISH CATCHING EQUIPMENT
METHOD FOR PROTECTING SEA MAMMALS OF DOLPHIN SUBFAMILY FROM FISH CATCHING EQUIPMENT
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机译:从捕捞设备中保护海豚亚科海哺乳动物的方法
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摘要
FIELD: fishery. SUBSTANCE: method involves generating in water medium discrete frequency modulated acoustic signals, which are emitted as intermittent pulses including three frequency intervals of at least 0.1 s duration. Center carrier frequency of each frequency interval is within the range of 2-6.3, 14-18 24-36 kHz, and modulated frequency does not exceed 160 kHz. Values of center carrier frequency of frequency intervals, duration thereof, modulated frequency and sequence of frequency intervals are selected by random number method. Method provides for selective action of acoustic signals upon animals. EFFECT: improved safety for animals and simplified method. 2 dwg, 1 ex
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机译:领域:渔业。实质:该方法涉及在水中产生离散的调频声信号,该声信号以包括三个持续至少0.1 s的频率间隔的间歇脉冲的形式发射。每个频率间隔的中心载波频率在2-6.3、14-18 24-36 kHz范围内,调制频率不超过160 kHz。通过随机数方法选择频率间隔的中心载波频率,其持续时间,调制频率和频率间隔的序列的值。该方法提供了声信号对动物的选择性作用。效果:提高了动物的安全性并简化了方法。 2 dwg,1 ex
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