摘要
海洋混响是水声信号目标检测中的主要干扰之一,克服混响干扰一直是水声信号处理的一个重要课题。如何在混响背景中有效地进行水声信号目标的检测?为了解决着一问题,引入了随机共振的方法。首先,在随机共振的原理基础上,给出了利用随机共振原理检测微弱周期信号的基本方法,并对方法进行了分析与验证。然后,将方法应用于以模拟混响为背景干扰的水声信号的检测中,仿真结果进行了分析,证明了方法的可行性。
As oceanic reverberation is the main interference to acoustic object detection, suppressing the chaos by signal porcessing is an important task. How to detect object in a reverberation background, the stochastie resonance is used to solve the problem. Firstly the basic principle of stochastic resonance is introduced, an approach for detecting weak periodic signal using stochastic resonance theory is presented. This method is analyzed and validated by simulated signal. Then the method of stochastic resonance is applied to the simulated reverberation background acoustic signal detection. The simulation results show that the method is feasible.
出处
《计算机仿真》
CSCD
北大核心
2009年第7期337-339,357,共4页
Computer Simulation
关键词
随机共振
水声信号
检测
Stochastic resonance
Acoustic signal
Detection
