An Adaptive Partial Discharge Ultrasonic Monitoring Method Based on Arbitrary Formation
A partial discharge and ultrasonic monitoring technology, applied in the monitoring field, can solve the problems of poor anti-interference performance and poor flexibility, achieve high resolution, good output signal-to-noise ratio and resolution, and suppress noise and interference
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[0038] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0039] The essence of the invention is to model the sensor array in any formation and introduce adaptive beamforming technology, thereby improving the application range and anti-jamming performance of the method. Described method comprises the steps:
[0040] 1) corresponding figure 1 In 101, an array containing N ultrasonic sensor array elements is used to receive signals;
[0041] 2) corresponding figure 1 In 102, the time-domain signals of N array elements and L snapshots are accumulated;
[0042] 3) corresponding figure 1 In 103, fast Fourier transform is performed on L time-domain snapshot signals of N array elements to obtain an N*L frequency-domain data matrix X;
[0043] 4) corresponding figure 1 In 104, the array covariance matrix R is estimated using the Fourier transformed snapshot data
[0044] (1)
[0045] In the form...
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