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。
2
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。
3
By using variables separation in the complex number field, the real analytical solution in the form of Fourier series was obtained.