基于调制线谱特征提取的被动声呐目标识别技术研究

Research on Technique of Passive Sonar Target Recognition Based Modulation Line Spectrum Feature Extraction

目标噪声特征提取和目标分类器设计是被动声呐目标识别系统的关键技术。本文针对被动声呐目标识别 ,首先着重研究了调制线谱特征提取方法 ,然后为了训练神经网络目标分类器 ,本文将遗传算法和BP算法相结合 ,提出了一种新的自适应遗传BP算法。最后 ,对海上实录的三类目标噪声进行了分类识别 ,实验结果表明本文设计的被动声呐目标识别系统具有很好的分类效果。

Feature extraction of targets radiated noise and design of targets classifier are key technique of passive sonar target recognition system.ln this paper,a feature extraction method of modulation line spectrum is studied at first,and then a novel adaptive genetic backpropagation algorithm is proposed for training neural network target classifier.At last,the classification experiment for three different classes of targets is done,results of experiment show that the passive sonar target recognition system designed in the paper has higher correct classification rate ?