基于海豚whistle信号的仿生主动声纳隐蔽探测技术研究

发布时间：2018-01-02 05:05

本文关键词：基于海豚whistle信号的仿生主动声纳隐蔽探测技术研究　出处：《兵工学报》2016年05期 　论文类型：期刊论文

【摘要】：为解决主动声纳系统易暴露、隐蔽性差的问题,提出一种基于海豚whistle信号的仿生主动声纳隐蔽探测技术。在发射端将线性调频探测信号隐蔽在海豚whistle信号中,设计了一种主动声纳的仿生隐蔽探测信号,该信号与海洋中的海豚哨叫声十分相似,可以利用海洋中的生物环境噪声实现主动声纳的隐蔽探测。在接收端选用自适应相关器作为主动声纳的时域处理器,自适应相关器对海洋环境有较强的匹配适应能力,可以自动匹配海洋信道,有效抑制多途扩展损失,相较匹配滤波器有更高的信噪比处理增益,有助于实现远距离探测。仿真和海试结果表明,基于海豚whistle信号的仿生主动声纳隐蔽探测技术具有良好的隐蔽性和有效性。
[Abstract]:In order to solve the problem of easy exposure and poor concealment of active sonar system. A bionic active sonar covert detection technique based on dolphin whistle signal is proposed, in which the LFM detection signal is hidden in the dolphin whistle signal at the transmitter. An active sonar bionic hidden detection signal is designed, which is very similar to the dolphin whistle in the ocean. The covert detection of active sonar can be realized by using the biological ambient noise in the ocean, and the adaptive correlator is chosen as the time domain processor of active sonar at the receiving end. The adaptive correlator has a strong matching adaptability to the marine environment, it can automatically match the ocean channel, effectively suppress the multi-path spread loss, and has higher SNR processing gain than the matched filter. Simulation and sea test results show that the bionic active sonar covert detection technology based on dolphin whistle signal has good concealment and effectiveness.
【作者单位】：哈尔滨工程大学水声技术重点实验室;哈尔滨工程大学水声工程学院;常州大学信息科学与工程学院;
【基金】：总装备部预先研究项目(9140A26020314CB01001) 国家自然科学基金青年科学基金项目(11204051);国家自然科学基金项目(61501061) 海洋工程国家重点实验室开放课题项目(1316)
【分类号】：U666.7
【正文快照】： 0引言主动声纳是探测安静型潜艇最有效的一种手段,但隐蔽性差是主动声纳系统的一个致命缺点,因此如何提高主动声纳系统的隐蔽性就显得十分重要。对于有源主动探测,“隐蔽”的含意是指使主动声纳的发射信号形式类似于自然噪声、杂波或民用传播信号,从而极难被敌方声纳侦察、获

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