基于多分辨分析的位场滤波算法

ASSEMBLE POTENTIAL FILTERS BASED ON MRA

将基于多分辨分析（ＭＲＡ）的组合滤波器用于重力位场滤波算法，取得了令人满意的效果．该组合滤波器可以对异常进行更为精细的滤波，在一定程度上解决了常规小波滤波器分解阶数过大的问题．相对于Ｆｏｕｒｉｅｒ分析，ＭＲＡ组合滤波器的频时双重局域性能保持原始异常的形态，更适用于高保真的位场滤波．数值模拟结果表明该算法是有效的．

おased on the multiresolution analysis,the gravity and magnetic assemblefilters are constructed in the paper,and good results are obtained.The filters based on MRA can decompose at different resolution levels which are much finer than those normal wavelet filters.So they can distinguish noise in detail and can keep the shape of anormal curve.Compared to Fourier analysis,MRA assemblefilters are more suitable to high fidelity gravity and magnetic data processing.The numerical emulation has proved this conclusion.