船舶辐射噪声连续谱相似度评估方法及分析

Analysis of the Similarity Evaluation Methods of Ship Radiated Noise's Continuous Spectrum

评估船舶辐射噪声连续谱之间的相似度,首先需要对连续谱特征进行提取、量化,然后利用得到的特征数据进行相似度计算。特征提取和相似度计算方法决定相似度评估方法的有效性。对六种船舶辐射噪声连续谱相似度评估方法进行了算法实现,并使用实测船舶辐射噪声的连续谱对所实现算法的评估效果进行了比较、分析,分析结果可为船舶辐射噪声连续谱相似度评估的算法选用提供参考。

To evaluate the similarity of ship radiated noise’s continuous spectrum,extraction and quantization of the continuous spectrum’s feature should be conducted first.Then the similarity can be calculated with the quantized feature data.The feature extraction and similarity computation methods determine the effectiveness of the similarity evaluation methods.Six similarity evaluation methods of ship radiated noise’s continuous spectrum are implemented.Real measured ship radiated noise samples are used to test,compare and analyze their evaluation performance.The results can be a reference for the choice of the similarity evaluation methods of ship radiated noise’s continuous spectrum.