浅海负跃层中声传播特性研究
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摘要
负跃层是温度(或者声速)急剧下降的水层,它对声呐的作用距离产生了一定的影响。从敌方潜艇探测我方潜艇的发射噪声出发,结合潜艇利用跃变层隐蔽发射武器的背景,分析浅海环境下发射噪声传播特性,建立了负跃层发射噪声的传播模型,仿真分析负跃层对被动声呐探测发射噪声的影响。仿真结果表明,低频段发射噪声有利于被动声呐的探测,被动声呐在浅海负跃层探测发射噪声的距离明显小于浅海环境下探测发射噪声的距离,负跃层的深度以及声速差对被动声呐探测发射噪声距离有较大的影响。
The thermocline is the water layer where the temperature(or speed sound)drops sharply,and it has a certain influence on the range of the sonar. Starting from the enemy submarine detecting the launching noise from our submarine,in combination with the background of the covertly launching weapon,propagation characteristics of launching noise in shallow sea are analyzed,propagation loss model for launching noise in thermocline is established,the effect of thermocline on passive sonar detection launching noise is simulated and analyzed. Simulation results show that low-frequency launching noise is favorable for passive sonar detection,the distance that the passive sonar detects the launching noise in the thermocline shallow water is obviously less than the distance to detect the launching noise in the shallow water. The depth of the thermocline shallow water and the speed difference have a great influence on the detection distance of the passive sonar.
The thermocline is the water layer where the temperature(or speed sound)drops sharply,and it has a certain influence on the range of the sonar. Starting from the enemy submarine detecting the launching noise from our submarine,in combination with the background of the covertly launching weapon,propagation characteristics of launching noise in shallow sea are analyzed,propagation loss model for launching noise in thermocline is established,the effect of thermocline on passive sonar detection launching noise is simulated and analyzed. Simulation results show that low-frequency launching noise is favorable for passive sonar detection,the distance that the passive sonar detects the launching noise in the thermocline shallow water is obviously less than the distance to detect the launching noise in the shallow water. The depth of the thermocline shallow water and the speed difference have a great influence on the detection distance of the passive sonar.
引文
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[7]练永庆,郭煜,张孝芳.潜艇水下武器发射后海水喷流噪声数值仿真[J].鱼雷技术,2015,23(01):61-65.
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[10]孙芳,高飞,潘长明等. Marsh-Schulkin与Rogers模型比对分析[J].海洋测绘,2014,34(4):44-47.
[2]喻荣兵,陈建勇,谢志敏.负跃层对主动声呐探测距离影响仿真研究[J].海军航空工程学院学报,2009,24(2):141-143.
[3]刘伯胜,雷家煜.水声学原理[M].哈尔滨:哈尔滨工程大学出版社,2009.
[4]张振山,程广涛.浅谈水下武器发射噪声的生成及控制[J].鱼雷技术,2012,20(4):309-313.
[5]马伟明,许金,杨琼方等.鱼雷发射管跟随流体射流噪声的数值计算[J].华中科技大学学报,2016,44(4):1-5.
[6]方媛媛.潜艇水下武器发射噪声的模拟及预报研究[C]//第十三届船舶水下噪声学术讨论会论文集,中国造船工程学会船舶力学学术委员会,2011:199-204.
[7]练永庆,郭煜,张孝芳.潜艇水下武器发射后海水喷流噪声数值仿真[J].鱼雷技术,2015,23(01):61-65.
[8]R J URICK. Principles of Underwater sound.3rd edition[M]. U.S:Eninsula Publishing,1983:178.
[9]W H THORP.Analytic Description of Low Frequence Attention Coefficient[J]. J.Acoust.Soc.-Am,1967(42):270.
[10]孙芳,高飞,潘长明等. Marsh-Schulkin与Rogers模型比对分析[J].海洋测绘,2014,34(4):44-47.