基于海底界面地震波的浅海目标探测研究

Research on shallow sea detection technology based on seismic wave

为验证地震波在浅海探测的可行性,并评估地震波对舰船等目标的探测能力,在我国南海某浅海海域开展了合作目标地震波探测试验.结果显示,通过接收合作声源发射信号证明在浅海环境下利用地震波进行探测具备很强的可行性;同时,验证了单矢量地震波探测设备所具备的测向能力,为下一步地震波组网探测奠定基础;通过合作目标拉距试验表明,针对600 t级船只航行激发的地震波信号可探测距离超过12 km,地震波信号明显且信号能量与目标和设备之间距离呈正相关关系;本文合作/非合作目标地震波探测试验结果表明,地震波手段可作为在浅海海域目标探测的一种新的选择和手段.

For the deficiency of underwater acoustic detection,a series of seismic wave experiments depend on cooperative and non-cooperative targets were carried out on offshore waters of the East and the South China Sea.The results of cooperative target experiment show that for a 600 t ship,the detectable distance of the generated seismic wave signal by ship can exceed 12 km,the signal is stable and not be affected by underwater acoustic channel.Besides,the energy of experiments is positively correlated with the distance between the target and the detection equipment.The non-cooperative target experiment focuses on verifying the direction finder capability of a single device in shallow water circumstances,which provides a basis for the netted underwater seismic wave detection system.In this paper,the results of cooperative/non-cooperative target seismic wave detection experiments show that the seismic wave means can be used as a new choice and approach for target detection in offshore area.