在实际应用中，不同类型地震噪声的存在给截距和梯度的可靠估计带来了很大困难。
In practice, the existence of different types of seismic noises causes significant difficulties to reliably estimate intercept and gradient.
初步分析表明，借助非整数阶微积分来改变地震数据的分维值、压制地震噪声是可能的。
The result shows that the S/N ratio can be raised and the seismic noise suppressed with nonintegerorder calculus.
本文提出用于地下成像无源地震方法的分析，在该方法中应用环境地震噪声作为地下散射体的照明源。
An analysis of a passive seismic method for subsurface imaging is presented in which ambient seismic noise is employed as the source of illumination of subsurface scatterers.
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