Svd-ica-based tsp strong industrial electrical interference suppression method
An electric interference and industrial technology, which is applied in the field of suppressing TSP strong industrial electric interference in the advanced geological prediction of tunnels, can solve the problems of difficult application of industrial electric interference suppression or suppression effect, unsatisfactory, inability to determine the order and polarity of independent components, etc. , to achieve the effects of improving the accuracy of geological prediction, suppressing noise, and reducing the cost of repeated acquisition
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[0053] Below in conjunction with accompanying drawing and embodiment do further detailed description:
[0054] In this embodiment, one piece of data of the X component in the three-component recording is used for processing, the recording time is 382 ms, and the sampling rate is 1000 Hz.
[0055] 1. The suppression method of TSP strong industrial electrical interference based on SVD-ICA, including the following steps:
[0056] a. TSP field construction adopts the working form of multiple shot point excitation of common detectors. The collected data includes X, Y, and Z components, which are stored independently. Record all shot point records as G', and record each channel data of G' one by one. Perform spectrum analysis to find out all the seismic channels that are subject to strong industrial electrical interference, and record them as P 1 ,P 2 ,...,P g , to construct the interference gather, denoted as
[0057] D=[P 1 ,P 2 ,...,P g ] (1)
[0058] Where g is the total...
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