coefficient adj. 共同作用的。 n. 1.共同作用;協(xié)同因素。 2.【數(shù),物】系數(shù),率;程度。 coefficient of absorption 吸收率[系數(shù)]。 coefficient of expansion 膨脹系數(shù)。 coefficient of displacement 排水量[系數(shù)]。
Then , introducing the method to calculate the wedge diffraction based on go . and giving the comparative advantages of a few formulas about the heuristic diffraction coefficient for finite conductivity wedge 重點(diǎn)闡述并比較分析了有耗尖劈的各種啟發(fā)式的一致性繞射公式,給出了相對(duì)較好的有耗尖劈的啟發(fā)式的一致性繞射公式。
At present greco is regarded as one of the most valuable methods of radar cross section ( rcs ) computation in the high - frequency region . depending on these conditions , several researches have been completed in this paper : firstly , calculating rcs of complex conducting targets has been accomplished by greco method . the high - frequency rcs of targets are obtained through physical optics ( po ) and incremental length diffraction coefficients ( ildc ) respectively 本論文做了以下研究工作:首先,實(shí)現(xiàn)了運(yùn)用greco方法計(jì)算了高頻區(qū)理想導(dǎo)體復(fù)雜目標(biāo)的雷達(dá)散射截面( rcs ) ,分別應(yīng)用了物理光學(xué)法( po )和增量長(zhǎng)度繞射系數(shù)法( ildc )計(jì)算了目標(biāo)的面元和棱邊的電磁散射,最后綜合面元與棱邊的散射效應(yīng)得到目標(biāo)的總rcs 。
Incremental length diffraction coefficients ( ildc ) is adopted to calculate the contribution of edge diffraction . in order to improve the accuracy of calculation , multi - scattering is discussed , based on the two former contributions and ray - tracing method . geometrical optics ( go ) and physical optics ( po ) are used to calculate the multi - reflection between facets and facets 對(duì)于鏡面反射采用物理光學(xué)法計(jì)算其散射貢獻(xiàn),結(jié)合基于面元的目標(biāo)模型的表示,采用離散的積分形式,將面電流積分化簡(jiǎn)為線積分,簡(jiǎn)化計(jì)算復(fù)雜度;對(duì)于邊緣繞射,運(yùn)用增量長(zhǎng)度繞射系數(shù)理論計(jì)算目標(biāo)邊緣繞射場(chǎng);在多次反射中,則以光線跟蹤方法為基礎(chǔ),采用幾何光學(xué)、物理光學(xué)相結(jié)合的方法分析考慮多次散射場(chǎng)。