摘要
以傳統濾波方法對磁力資料進行處理，依所欲呈現的信號頻帶設計高通、低通或帶通等不同型式濾波器。雖然異常體可以有強化的效果，但是特定波長的訊號不一定是目標物所專屬，以致於在濾波之後原本無異常訊號之處反而也被加強，其原因是實際磁力所得信號與富氏轉換時所用的基底函數為無限長弦波兩者之間有不相合之處。在信號空間域-波數域的定位問題上，加窗富氏轉換與小波分析的技術提供了解決方案，而後者的發展更應用到處理重力或磁力資料處理。小波母波可以延伸，經過分析之後細節信號在越多階分析細節信號寬度越大，其細節信號的提出與淺層小區域磁力測勘所需要的目標信號相當一致，本文透過竹山槽溝一維信號的處理與解釋，印證了兩者之間的關係。其中，分析之後的磁力總量與梯度之細節信號上，前者可能是低頻能量比例太高，以致其細節信號重組後之合成信號仍無法回復原始的總量信號，因此梯度信號分析結果會具有地淺部下異常意義顯示。同時對師大分部實驗區與古根漢博物館預定地二維磁力梯度資料進行分析與信號重組，在濾除掉長波長信號之號，可以很清楚的看出加強了S/N值。

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