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寻找一种基于位场性质的、能将区域场与局部场较为客观地分离开来的方法,一直是许多地球物理工作者的努力目标。本文提出了一种最小均方误差线性滤波方法。它是根据所要研究区域的位场特点设计的。用此法对直立棱柱组合模型场进行了试算,并用南京- 铜陵地区航磁资料进行实际计算,均取得了较好的效果。在此基础上,结合化极、垂向二次导数等处理方法,就有可能对大面积的航磁资料作出较为合理和确切的地质解释。
It is always a goal of many geophysical workers to find a method that can separate the regional field from the local field more objectively based on the nature of the field. In this paper, a minimum mean square error linear filtering method is proposed. It is designed according to the field characteristics of the area to be studied. This method was used to test the vertical prism combination model field, and the actual calculation was carried out with the aeromagnetic data of Nanjing - Tongling area, all achieved good results. On the basis of this, it is possible to make a more reasonable and exact geologic interpretation of a large area of aeromagnetic data in combination with such methods as magnetization pole and vertical second derivative.