在重磁资料解释中,往往需要对异常曲线进行圆滑处理或分离后再作进一步的解释。通常采用的是所谓线性滤波,即设计一种响应或在空间域作褶积或在频率域作乘积。由于使用这类滤波器,要消去的干扰不能全部去掉,而保留的有用信号受到畸变,滤波有一定的局限性。为此,有人提出一种非线性滤波方法及位变滤 In the interpretation of gravity data, often need to smooth the abnormal curve or separation for further explanation. Commonly used are so-called linear filtering, which is to design a response or to convolve in the spatial domain or multiply in the frequency domain. Due to the use of such filters, the interference to be eliminated can not be completely removed, but the useful signals retained are distorted and the filtering has some limitations. To this end, it was proposed a nonlinear filtering method and bit-change filtering