摘要
本文介绍一种名为插值切割的消除磁异常干扰的算法,并通过对具有不同信噪比和不同信息密度的模型进行了大量的计算,得到选取最佳切割半径的经验关系式.其中引入了磁异常状态数的新概念,与匹配滤波法、向上延拓法和其他方法对比,插值切割法有着较高分离磁异常和磁干扰的能力,适于处理叠加有随机和非随机磁干扰的复杂磁异常.为说明该法的应用效果,举有实例.
A computational process called the interpolation cut method for the elimination of disturbances from magnetic anomalies is briefly introduced in this paper. Through a vast of calculations for models with different signal-nose ratics and signal densities, an empirical formula for chccsing the optimal cutting radius was obtained. In deriving the formula a new concept of condition number for the magnetic anomaly was introduced. In comparison with matched filtering, upward ontinuation and some other methods, the method discussed has great ability to separate the magnetic disturbance from significant anomalies and is suitable to handle complicated magnetic anomalies with random or/and non-random noises. Two examples are given for illustration.
出处
《地质与勘探》
CAS
CSCD
北大核心
1991年第2期40-45,共6页
Geology and Exploration
