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首页> 外文期刊>Microwave and optical technology letters >Simultaneous extrapolation of RCS in both angular and frequency domains based on AWE technique
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Simultaneous extrapolation of RCS in both angular and frequency domains based on AWE technique

机译：基于AWE技术的角域和频域RCS同时外推

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摘要

The radar cross section (RCS) of a target is dependent on frequency as well as angle. The method of moments (MoM) in conjunction with the asymptotic waveform evaluation (AWE) technique is applied to predict the monostatic RCS of an arbitrarily shaped two-dimensional cylinder in both the frequency and angular domains simultaneously. The electric-field integral equation (EFIE) of the cylinder is solved using the MoM to obtain the equivalent current on the cylinder. In the AWE technique, the equivalent current at a given frequency and angle is expanded in the desired frequency and angle band in a binomial Taylor's series. The binomial Taylor's series coefficients are then matched via the Pade approximation to a rational junction. Using the rational junction; the current is obtained at any frequency and angle within the interesting frequency and angular range, which is in turn used to calculate the RCS of the cylinder. The use of this method for extrapolation of the RCS has at least two significant advantages: one being the obtained RCS analytical formulas, and the other being a significant decrease in the amount of time required for modeling problems with large computational domains.
机译：目标的雷达截面（RCS）取决于频率以及角度。矩量法（MoM）结合渐近波形评估（AWE）技术应用于在频域和角域中同时预测任意形状的二维圆柱体的单静态RCS。使用MoM求解圆柱体的电场积分方程（EFIE），以获得圆柱体上的等效电流。在AWE技术中，给定频率和角度下的等效电流以二项式泰勒级数在所需的频率和角度范围内扩展。然后，将二项式泰勒级数系数通过Pade逼近匹配到有理交点。使用有理结;在感兴趣的频率和角度范围内的任何频率和角度获得电流，然后将其用于计算圆柱的RCS。使用此方法外推RCS具有至少两个重要优势：一个是获得的RCS分析公式，另一个是显着减少了对具有大计算域的问题进行建模所需的时间。

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