MOM中的宽带信息是从窄带数据中获得的

F. Kaburcuk, S. Arvas, E. Arvas, J. Lee
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引用次数: 3

摘要

在求解辐射和/或散射问题时,矩量法可以利用基于模型的参数估计技术给出宽带信息。通过计算膨胀系数在固定中心频率处的值及其频率导数得到参数。这需要计算矩矩阵及其频率导数。以细线散射体为例说明了该技术。采用分段正弦波作为展开函数,采用点匹配法进行测试。然后,矩矩阵及其导数可以解析计算。计算结果表明,根据所使用的导数的数量,可以在带宽的一个倍频程内获得精确的结果,包括共振。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Wideband information in MOM obtained from narrowband data
When solving radiation and/or scattering problems, the Method of Moments can give wideband information by using a Model Based Parameter Estimation technique for the expansion coefficients. The parameters are obtained by computing the values of expansion coefficients and their frequency derivatives at a fixed center frequency. This requires computing the moment matrix and its frequency derivatives. The technique is illustrated for a thin wire scatterer. Piecewise sinusoids are used as expansion functions and point matching is used for testing. The moment matrix and its derivatives can then be computed analytically. Computed results show that depending on the number of derivatives used, accurate results, including resonances, can be obtained over an octave of bandwidth.
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