F., 1968, Synthesis of a layered medium from its acoustic transmission response: Geophysics, 33(2), 264–269.Ĭhen, X. The imaging of compensated data gives a more detailed information of deep structures.Īrtman, B., 2006, Imaging passive seismic data: Geophysics, 71(4), SI177–SI187.Ĭlaerbout, J. The proposed power-matching method adds the losing low frequency information in the active seismic data using the low-frequency information of passivesource seismic data. Finally, we use numerical simulation to verify the proposed method and conduct prestack depth migration using data after low-frequency compensation. To compensate for the low-frequency information in active data using passive seismic data, we match the power spectrum, supplement it, and then smooth it in the frequency domain. By analyzing the spectral characteristics of passive data before and after reconstruction, we found that the data are expressed more clearly after reconstruction and denoising. Multidomain iterative denoising improves the SNR of retrieved data. Compared to conventional cross correlation and deconvolution reconstruction methods, the proposed method can more accurately reconstruct the relative amplitude of recordings. To effectively extract and compensate active seismic data that lack low frequencies, we propose a multitaper spectral reconstruction method based on multiple sinusoidal tapers and derive equations for multisource and multitrace conditions. Passive seismic data contain large amounts of low-frequency information.
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