在地球物理學中,我們常常遇到這樣的問題:如何從在一定的觀測時間內所觀测得到的數據中,找出在所觀測的對象中潛伏着的週期性。众所周知,我們可以利用諧波分析及自相關方法(autocorrelation method)的數字計算以達到這個目的。但是,這樣做是頗為繁冗的。這里我們將要介紹一種波譜分析儀,用電子學 In geophysics, we often encounter the question of how to find the periodicity lurking in the observed object from the data observed during a certain observation time. As we all know, we can use the harmonic analysis and autocorrelation method (digital calculation) to achieve this goal. However, this is quite lengthy. Here we will introduce a spectrometer, using electronics