关键词: 边缘检测, 声谱图, 特征提取, 分类识别

Abstract: Early-warning and recognition of torpedoes, which needs a comprehensive application of different kinds of recognition methods, is a complex process. The key point of the process is to extract the features of torpedo radiated noise. Considering the difference between torpedoes and non-torpedoes in the spectrum of radiated noise, the researches on image edge detection and feature extraction have been done. The characteristic quantity of spectrum of vehicle radiated noise is definition. A method, based on image edge detection and feature extraction, is put forward to get the characteristic quantity of torpedoes and applied to researches of recognition of torpedoes. The experimental results show that the method, which can extract the feature of spectrum well, can provide a dependable characteristic to recognition and early-warning of torpedoes.

Key words: edge detection, spectrum of radiated noise, feature extraction, recognition