Noise inhibiting method in vertical array receiving signal cross spectrum arra yevaluation in sea
A cross-spectral matrix, receiving signal technology, applied in the field of underwater acoustic signal processing
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[0071] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0072] (1) The vertical array at the first sampling time t 0 and with the first sampling instant t 0 Multiple adjacent sampling moments receive signals from the target sound source. In one embodiment, the first sampling moment t 0 Adjacent multiple sampling instants refer to t 0 N sampling moments before and after the adjacent ones. These sampling instants are denoted by t n = t 0 +nT means that the value of n is from -N to N. When n is a negative number, it means that the sampling moment is at t 0 Before, when n is a positive number, it means that the sampling moment is at t 0 Afterwards, when n is zero, it represents the first sampling instant t 0 . It should be understood that at the selected first sampling instant t 0 After that, the selection of other sampling moments can be changed in many ways, which does not affect t...
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