摘要
为求解不规则地形上电波以较大仰角传播问题,将波动方程近似转化为宽角抛物方程,并用分步付立叶变换方法求解。详细分析了这种求解方法产生误差的机理,给出了减小误差的方法,并以两种典型算例说明了误差的存在及其与计算时间的关系。
The wave equation was transformed as a wide-angle parabolic equation for evaluating the radio propagation problem at the big elevation on the irregular terrain. The result was obtained by the split-step Fourier transform method and the errors produced by this method was analyzed in detail. A method for reducing the error and improving the precision of result was proposed in this paper. Two typical radio propagation problems was taken as a example to prove that the error is existence and has a relationship to spending time.
出处
《电波科学学报》
EI
CSCD
北大核心
2006年第2期199-203,共5页
Chinese Journal of Radio Science
