use narrow-band broad-band methods to demodulate the ship-radiated noise which is actually colleted, there can see clear axle frequency and blade frequency in the demo spectrum.

testch1.bin
zhaidaijietiao.m
简单说明.doc
bandpass1.mat
bandpass2.mat
bandpass3.mat
bandpass4.mat
bandpass5.mat
bandpass6.mat
bandpass7.mat
bandpass8.mat
bandpass.mat
kuadaijietiao.m
lowpass.mat

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