听觉谱特征在水下目标回声识别中的应用

水下目标回声特征提取是主动目标识别的关键内容。本文提出将语音识别领域中较为成熟的RASTA-PLP听觉模型应用于水中目标回波的特征提取，并根据信号的特点对RASTA-PLP模型进行修正。对比应用PLP方法进行的水中目标单频回波识别实验，结果表明：当加入卷积噪声后，修正的RASTA-PLP特征表现出更加良好的鲁棒性能，在同等测试条件下识别率比PLP听觉模型特征高约3%，显示了本方法在实现目标回声自动识别上的重要应用前景。

Application of auditory spectrum features into echo target recognition

The more mature RASTA-PLP auditory mode in the field of speech recognition is presented to apply to the field of underwater target echo recognition. But also, According to the character of underwater target signal, The RASTA-PLP auditory mode is modified. Contrast to the PLP auditory model feature, the modified RASTA-PLP auditory model fea-ture is more robust to underwater target echo signal after the Gauss white noise is convoluted with the signal. At the equal test condition, the recognition ratio of the modified RASTA-PLP auditory model feature is 3%higher than the PLP auditory model feature. It shows the method important foreground in underwater target recognition.