| 损耗媒质中的复射线场 |
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| 引用本文： | 阮颖铮,杜惠平.损耗媒质中的复射线场[J].应用科学学报,1992,10(2):106-112. |
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| 作者姓名： | 阮颖铮 杜惠平 |
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| 作者单位： | 电子科技大学
(阮颖铮)，电子科技大学(杜惠平) |
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| 基金项目： | 国家教委博士学科点基金，国家自然科学基金资助课题 |
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| 摘 要： | 将损耗媒质中的复射线场视为波动方程的一个高频渐近解,详细讨论了这种场的属性,并耗情形作了对比.结果表明,损耗媒质中的复射线场仍能有效地表示高斯波束,在无耗情形下与无发展的复射线处理方法可以推广到损耗媒质情况,用该方法计算了具有吸波材料涂层的金属平板的雷达截面(RCS),理论计算与实验结果吻合很好,表明复射线理论的这一推广是可行的.
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| 关 键 词： | 损耗媒质 复射线 雷达截面 |
COMPLEX RAY FIELD IN LOSSY MEDIA |
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| EUAN YINGZHENG Du HUIPING.COMPLEX RAY FIELD IN LOSSY MEDIA[J].Journal of Applied Sciences,1992,10(2):106-112. |
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| Authors: | EUAN YINGZHENG Du HUIPING |
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| Institution: | University of Electronic Science and Technology of China} |
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| Abstract: | As an asymptotic solution of the wave equation at high, frequency, the complex ray field in lossy media is discussed in detail, and oompai'ed with the case of lossless ones. From these discussions, it is found that the Gaussian beam can also be effectively expressed by the complex ray field in lossy media, and the complex ray approaches developed in the lossless case can also be used in the lossy case. As an example, we give the ROS results obtained by both theoretical and experimental methods for a conducting flat plate with one surface coated with radar absorbing materials. Their good agreement shows the extension of complex rays from lossless media to lossy ones is reasonable. |
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| Keywords: | complex ray radar cross section radar absorbing material |
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