It is shown that the improved algorithm provides more accurate calculation results than the complex Gaussian function expansion, so long as the number of Fourier series is no less than 30.
研究表明，只要傅里叶级数项数不少于30，改进后的算法比直接用复高斯函数展开具有更高的计算精度。
According to the desired accuracy, we determine the number of terms in the Fourier series and Legendre polynomials, then the Practical simplified formulae are obtained.
根据计算精度要求，确定福里哀级数和勒让德多项式的项数，从而得到实用简化公式。
By using variables separation in the complex number field, the real analytical solution in the form of Fourier series was obtained.
在复数域内利用分离变量法，得到了这类方程的级数形式的解析解，而最后的解是实数形式。
The normalized full gradient and phase of gravity anomalies have been studied by potential field conversion and fast Fourier transform in wave-number domain.
用波数域的位场转换和快速傅立叶变换理论研究重力归一化总梯度和归一化相位；
Based on the prime radix DFT and number theory, an algorithm using the second order recursive filter and the zero factor prime radix Fourier Transform (ZFT) is presented.
从素基数DFT出发，应用数论理论讨论了一种应用二阶递归滤波结构的算法及零因子转换算法(ZFT)。
Currently, a number of methods proposed for calculating the phasors of harmonic components of signals using the Fourier algorithm seem to make electrical engineers puzzled as to which to choose from.
目前有多种采用傅里叶算法求取信号谐波分量相量值的方法，使得工程技术人员无从选择。
The power spectra curve as a function of the mode number of outer or inner profiles are also calculated by the application of fast Fourier transform to the circumferential profile data.
应用快速傅里叶变换算法对靶丸圆周轮廓数据进行分析，获得了靶丸表面外轮廓或内轮廓模数-功率谱特征曲线。
The power spectra curve as a function of the mode number of outer or inner profiles are also calculated by the application of fast Fourier transform to the circumferential profile data.
应用快速傅里叶变换算法对靶丸圆周轮廓数据进行分析，获得了靶丸表面外轮廓或内轮廓模数-功率谱特征曲线。
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