基于RLGA的随机共振方法在水声信号检测中的应用研究
Research on Stochastic Resonance Based on RLGA and its Application to Underwater Acoustic Signal Detection
Abstract
我国在水下通信领域方面正在持续地投入研究，其中一个方面是通信中信号的检测。信号经过水声信道后往往都会被来自船舶、海洋生物或者人为的大量噪声和海面折射反射、频率选择性衰弱引起的干扰淹没，变为微弱信号。而水声信号的检测技术不论在理论钻研还是实际工程甚至国防建设中都具有重要的意义和应用价值。因此，研究微弱信号的检测方法对水声通信的进步和发展很有必要。 一些传统的信号检测方法如匹配滤波、相干检测、时频分析等都采用抑制噪声的方法，往往都是在抑制噪声的同时，在频率结构或者时域幅值上也不同程度地损害了有用信号。随机共振却是另辟蹊径，不再是为了滤除噪声，而是最大限度地利用噪声，通过一个非线性系统将噪声的能量... We are continuing to invest in the field of underwater communications research, one of which is the detection of signals in communication. Overwhelmed by a large amount of noise caused by ships, marine life and man or interference of refraction and frequency selective weakness, the signal often becomes weak signal through the underwater acoustic channel. The detection technology of underwater acou...