Wind tunnel test noise pulsating pressure determination method and device

The embodiment of the invention provides a wind tunnel test near-field noise pulsating pressure determination method, which comprises the following steps: acquiring a first pulsating pressure sequence of a far field and a second pulsating pressure sequence of a near field of a wind tunnel test object, and carrying out continuous wavelet transform on the second pulsating pressure sequence to obtain a wavelet coefficient matrix; carrying out iterative calculation operation for at least two times; comprising the steps that a new wavelet coefficient threshold value is determined, a new noise pulsating pressure sequence is determined according to the newest wavelet coefficient threshold value and a wavelet coefficient matrix, and a cross correlation coefficient sequence of a first pulsating pressure sequence and the newest noise pulsating pressure sequence is determined; starting from the second iterative calculation operation, judging whether a cross correlation coefficient meeting a preset condition exists or no