关于抛物方程傅里叶变换步进算法在电波绕射中的应用研究

Research of the Application of the Fourier Transform Algorithmfor Parabolic Equation in Radio Wave Diffraction

抛物方程傅里叶步进算法是电波传播覆盖预测的兼顾计算精度和计算速度的有效算法。在本文计算分析研究中,考虑菲涅耳绕射问题的解析结果与抛物方程计算结果进行了比较。在数值计算研究中,讨论了抛物方程最大偏离角度,傅里叶变换数据点数,离散间隔对障碍物绕射结果的影响。

The Fourier stepping algorithm for the parabolic equation is an effective method,which can create a balance between the accuracy and the speed of the calculation.In the analysis and research of this paper,the calculation results considering the Fresnel diffraction have been compared with the calculation results of the parabolic equation.In the numerical calculation study,the influence of the parabolic equation maximum deviation angle,the Fourier transform data points and the discrete interval to the results of the obstacle diffraction has been discussed.