用復(fù)射線展開法計(jì)算目標(biāo)散射場的誤差特性分析
ERROR ANALYSIS OF COMPLEX RAY EXPANSION METHOD FOR TARGET SCATTERING FIELD COMPUTATION
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摘要: 復(fù)射線展開法是計(jì)算目標(biāo)散射場的一種簡捷的方法,其可靠性有賴于對誤差特性的系統(tǒng)研究。本文以平面波譜積分為散射場計(jì)算的參考標(biāo)準(zhǔn),以L2空間中由范數(shù)定義的距離作為復(fù)射線展開法計(jì)算結(jié)果的誤差,從而得到了復(fù)射線展開法在目標(biāo)散射場計(jì)算中的誤差特性,找到了減小誤差的方法并給出這一方法的適用范圍。
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關(guān)鍵詞:
- 復(fù)射線展開法; 誤差分析; 電磁散射; 平面波譜積分
Abstract: The complex ray expansion is a simple approach for target scattering field computation, whose effectiveness depends on the systematic investigation of its error. In this paper, plane wave spectral integral is used as a standard reference and the distance defined by norm in L2 space is introduced as the error function for comparison between the two methods, and then the error characteristics of complex ray expansion appoach for target scattering field computation are obtained. The way to decrease the error and the application range of the complex ray expansion method are also obtained. -
阮穎錚,編著.復(fù)射線理論及其應(yīng)用.北京:電子工業(yè)出版社,1991,第四章.[2]Ling H, Chou R C, Lee S W. IEEE Trans. on AP, 1989, AP-37(2):194-205.[3]阮穎錚.電子學(xué)報(bào),1999,17(3): 89-94.[4]Ruan Y Z, Feng W L. lEE Proc. -F, 1991, 138(5): 397-399.[5]Ruan Y Z, D u H P. J. Electronics (China), 1993, 10(1):71-78.[6]Felsen L B. Philips Res. Rep., 1975, 30(1):169-184. -
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