匹配滤波技术在临邑三维成果资料处理中的应用

Application of matched filtering technique to 3D achievement data processing of Linyi.

为了提高常规三维资料的品质 ,在与相邻高分辨率三维资料的对比中 ,发现高分辨率资料在 2 .0s处的主频达5 0Hz以上 ,比常规资料的主频高 2 5～ 30Hz。根据Robinson褶积模型 ,忽略噪声项 ,在高分辨率资料与邻区常规地震资料的重复交接带 ,其反射系数是一致的 ,而地震记录的差异 ,则是由采集、处理中使用不同地震子波造成的。在临邑三维成果资料目标处理中 ,利用匹配滤波技术 ,从高分辨率成果资料提取子波 ,对邻区常规资料进行滤波处理 。

In order to improve the quality of conventional 3D data, we compared these data with highresolution 3D data acquired in the adjacent area. It is found that the main frequency of the latter were more than 50Hz at 2s greatly exceeded that of the former by 25～30Hz. According to the Robinson convolution model and neglecting the noise item, their reflection coefficients were showing no difference at the overlap zone of the above two. The difference of seismic record results from the different seismic wavelets used in the acquiring and processing. During the target processing of 3D achievement data, the wavelets will be extracted from the highresolution achievement data using matched filtering technique and the quality of the conventional data acquired in the adjacent area will be improved by filtering processing.