Based on the Kirchhoff scalar diffraction theory, the principle to choose sampling periods in the input plane, output plane and transformation function was analyzed in detail.
基于基尔霍夫标量衍射理论，详细分析了输入、输出平面及变换函数抽样间距的选取原则。
3
The basic principle of the path integral formulation for scalar wave propagation in random media is described.