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在衍射理论基础上详细推导了三种再现算法(菲涅耳积分变换法、卷积法、傅立叶变换法)的数学表示。
Mathematical representations for three kinds of reconstruction algorithms (Fresnel integral, convolution and Fourier transform) of digital hologram are deduced based on the diffraction theory.
应用有限傅立叶变换，导出两套不同阻值电阻组成的平面正方形无限网络任意两节点间等效电阻的积分表达式。
The effect resistance between two arbitrary nodes in an infinite square lattice with two binds resistors is calculated using the finite Fourier transformation.
该方法利用傅立叶展开来逼近未知的积分项，导出一种类似于阿达姆斯方法的计算机仿真计算公式。
The method approaches the unknown integrating factor with Fourier Expansion and deducts a kind of computer simulation formula which is similar to the Adams arithmetic.
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