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Research on the Distance of the Active Sonar under the Effects of the Thermocline

张显库  李纪端  
【摘要】:The existence of thermocline changes the acoustic structure and effects the direction of the sound rays.This paper analyzes the working process of the active sonar,and the mathematical models.The detection probability of the active sonar under thermocline is studied.First,the detection distance without thermocline is estimated,then the effect of thermocline's depth and sound velocity changes on detecting submarine probability are discussed,and based on this,the effects of the sea condition on searching submarine probability is discussed,lastly the distance of active sonar is calculated under thermocline.The results indicate that under thermocline,the distance of the active sonar becomes obvious short,and with the sea condition becoming rough,the effect is more clear.

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