基于单地震波传感器的运动目标参数估计方法
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摘要
远距离的强振源和近距离的弱振源在接收器中可能会引起相同的信号强度,从而使以检测能级阈值为主的目标区域判别方式造成误判,达不到良好的毁伤效果。利用单个三轴地震波传感器接收舰船航行时产生的水中和海底声信号对目标进行被动探测定位,与舰船产生的信号强度无关,与距离也无关,经理论分析表明:该方法能够检测出舰船的运动参数及从水雷上方通过的时间,从而确定水雷的最佳打击位置。
The long-range powerful sound source and short-range weak sound source may bring the same signal strength to the receiver,so that the threshold detection system of action zone will make erroneous judgment and increase the false alarm.In this case,mines cannot well cause any damage to the ship.The problem can be solved by a new detection technique.A single triaxial seismometer can be used to receive the acoustic signals transmitted through the water and sea bed by the ship under sail to detect and localize the ship.The detection method has no relation to the range as well as intensity of acoustic signal generated by the ship.The ship′s moving parameters can be estimated by the detection arithmetic to determine the best firing time.
The long-range powerful sound source and short-range weak sound source may bring the same signal strength to the receiver,so that the threshold detection system of action zone will make erroneous judgment and increase the false alarm.In this case,mines cannot well cause any damage to the ship.The problem can be solved by a new detection technique.A single triaxial seismometer can be used to receive the acoustic signals transmitted through the water and sea bed by the ship under sail to detect and localize the ship.The detection method has no relation to the range as well as intensity of acoustic signal generated by the ship.The ship′s moving parameters can be estimated by the detection arithmetic to determine the best firing time.
引文
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[3]卢再华,张志宏,顾建农.水压场引起海底地震波的特征[J].海军工程大学学报,2010,22(1):1-4.LU Zai-hua,ZHANG Zhi-hong,GU Jian-nong.Seafloor characteristics of seismic wave caused by ship hydrody-namic pressure field[J].Journal of Naval University of Engineering,2010,22(1):1-4.(in Chinese)
[4]KUPERMAN W A.Bottom Interacting Ocean Acoustic[M].California:Plenum Press,1980.
[5]鹿力成,马力,陈耀明.浅海海底模型对低频声传播的影响[J].声学技术,2007,26(5):787-793.LU Li-cheng,MA Li,CHEN Yao-ming.Effects of seabed model on low frequency sound propagation in shallow water[J].Technical Acoustics,2007,26(5):787-793.(in Chinese)
[6]HECHT R J.Investigation of the Potentialities of Using Seismic Sensors for the Detection of Ships and Other Na-val Platforms[R].La Spezia,Italy:Saclant ASW Research Center,1976.
[7]SCHMALFELDT B.Ambient and Ship-Induced Low-Frequency Noise in Shallow Water,Bottom-Interacting O-cean Acoustics[R].La Spezia,Italy:Saclant ASW Research Center,1982.
[8]ALI H B,SCHMALFELDT B.Seismic Sensing of Low-Frequency Radiated Ship Noise[R].La Spezia,Italy:Saclant ASW Research Center,1984.
[9]王永良.空间谱估计理论与算法[M].北京:清华大学出版社,2004.
[10]孙超,李斌.加权子空间拟合算法理论与应用[M].西安:西北工业大学出版社,1994.
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