First of all , this paper introduced the working theory of three kinds of fluxgate magnetometer sensors : single core sensor , double core sensor and ring core sensor . then the author discussed relations between noise and demagnetization coefficient , and relations between noise and dimension of fluxgate magnetometer sensors 本文從介紹磁通門傳感器的分類入手,詳細(xì)分析了單棒型、雙棒型和環(huán)型磁通門傳感器的工作原理,并且深入討論了磁通門傳感器的噪聲與退磁系數(shù)的關(guān)系以及噪聲與傳感器尺寸的關(guān)系。