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CORRELATION FUNCTION GENERATION DEVICE, CORRELATION FUNCTION GENERATION METHOD, CORRELATION FUNCTION GENERATION PROGRAM, AND WAVE SOURCE DIRECTION ESTIMATION DEVICE
CORRELATION FUNCTION GENERATION DEVICE, CORRELATION FUNCTION GENERATION METHOD, CORRELATION FUNCTION GENERATION PROGRAM, AND WAVE SOURCE DIRECTION ESTIMATION DEVICE
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机译:关联函数生成装置,关联函数生成方法,关联函数生成程序以及波源方向估计装置
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摘要
The present invention generates a correlation function having a clear peak even in an environment with a high ambient noise level. This correlation function generation device is provided with a plurality of input signal acquisition units for acquiring waves generated by a wave source as input signals, a conversion unit for converting the plurality of input signals acquired by the input signal acquisition units into a plurality of frequency-domain signals, a cross-spectrum calculation unit for calculating a cross spectrum on the basis of the frequency domain signals, frequency-specific cross-spectrum calculation units for calculating cross spectrums for each frequency on the basis of the cross spectrum, and an integrated correlation function calculation unit for calculating an integrated correlation function on the basis of the frequency-specific cross spectrums.
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