电子学报Issue(3)：592-596,5.DOI:10.3969/j.issn.0372-2112.2014.03.026
基于小波模极大值能量的船舶轴频电场检测
Detection of Ship Shaft-Rate Electric Field Signal Based on Wavelet Modulus Maximum Power
摘要
Abstract
In order to effectively detect ship shaft-rate(SR) electric signal ,the wavelet modulus maximum’s scale-distribu-tion characteristics of the measured SR electric signal is analyzed .Based on the analysis result that the intensity and distribution den-sity of noise’s wavelet modulus maximum decreases along the scale ,a detecting algorithm was proposed to extract the modulus maximum power in the highest scale as feature value to detect the target glidingly .As the wavelet reconstruction is avoided in the de-noising process using wavelet modulus ,the detecting algorithm proposed can be easily achieved by hardware .In the end ,the ef-fectiveness of the proposed method is verified both using measured data and simulated data ,and simultaneity compared with the de-tecting algorithm based on wavelet packet entropy .The verified result shows that the detecting algorithm provides a better detecting performance ,and it can keep detection rate of 79% when the SNR is -10 .8dB .关键词
船舶/轴频电场/小波变换/模极大值/检测Key words
ships/shaft-rate electric field/wavelet transformation/wavelet modulus maximum/detect分类
信息技术与安全科学引用本文复制引用
贾亦卓,姜润翔,龚沈光..基于小波模极大值能量的船舶轴频电场检测[J].电子学报,2014,(3):592-596,5.基金项目
国家自然科学基金 （）
