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首页> 外文会议>Progress In Electromagnetic Research Symposium >Fast calculation of wideband RCS of objects by combining improved ultra-wide band characteristic basis function method and AWE technique
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Fast calculation of wideband RCS of objects by combining improved ultra-wide band characteristic basis function method and AWE technique

机译：结合改进的超宽带特征基函数法和AWE技术快速计算物体的宽带RCS

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摘要

When improved ultra-wide band characteristic basis function method (IUCBFM) is used to calculate wideband radar cross section (RCS) of objects, the reduced matrix at each frequency point need to be reconstructed, which is very time-consuming. To solve this problem, an effective numerical method to fast calculate wideband RCS of objects by combining IUCBFM and asymptotic waveform evaluation (AWE) technique is proposed. The improved ultra-wide band characteristic basis functions can be reused at each interpolation points, so it can save the time of generating the characteristic basis functions. Moreover, to avoid the reduced matrix reconstruction at each frequency point, IUCBFM is combined with the AWE technique to fast predict the surface current at any frequency point in the to-be-solved frequency band and further realize the fast calculation of wideband RCS of objects. Compared with traditional IUCBFM, the method in this paper significantly improves the efficiency. Furthermore, the numerical calculation results have proved its precision and validity.
机译：当使用改进的超宽带特征基函数方法（IUCBFM）来计算对象的宽带雷达横截面（RCS）时，需要重建每个频率点的缩小矩阵，这非常耗时。为了解决这个问题，提出了一种有效的数值方法，该方法通过结合IUCBFM和渐近波形评估（AWE）技术快速计算物体的宽带RCS。改进的超宽带特征基函数可以在每个插值点重复使用，因此可以节省生成特征基函数的时间。此外，为避免在每个频率点上减少矩阵重构，IUCBFM与AWE技术相结合，可以快速预测待求解频带中任何一个频率点的表面电流，并进一步实现物体宽带RCS的快速计算。 。与传统的IUCBFM相比，本文方法大大提高了效率。此外，数值计算结果证明了其准确性和有效性。

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