檢波器耦合響應(yīng)數(shù)據(jù)的分析與評價應(yīng)用研究
[Abstract]:Under the condition of different physical properties, the response of the same geophone will be different, and the response of different natural frequency geophone will be different under the same surface condition. In the past, seismic exploration is based on experience or comparative experiments to select geophone with good receiving effect, but there is no set of quantitative analysis theory and method. We try to use a two-degree-of-freedom coupling system to simulate the frequency response of various geophones by using different near-surface parameters, and give a choice for practical application. The research in this paper focuses on simulating the amplitude-frequency response of geophone, and compares it with the single seismic record of actual exploration to demonstrate the adaptability of dual-degree-of-freedom coupling system. At the same time, under different surface conditions, the simulation of two-degree-of-freedom coupling system is carried out respectively, and combined with the time-frequency analysis method of generalized S transform, some suggestions for the selection of geophone in a certain area are given. In order to obtain better seismic records, frequency division matching filtering technology is used to broaden the collected seismic frequency and improve the signal-to-noise ratio (SNR).
【學(xué)位授予單位】:浙江大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:P631.436
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