本文基于渐近波形估计（AWE）技术和矩量法（MOM）快速预测无限大导体平面上任意形状凹槽的散射场方向性函数。
The method of moments (MOM) combining with the asymptotic waveform evaluation (AWE) technique is used to predict scattering fields of an arbitrarily shaped groove in a perfectly conducting plane.
不同阶幅度矩进行调制分类的方法利用MPSK/MQAM信号每符号段波形起始点与其它点幅度的乘积统计矩特征进行调制分类。
The method with different order amplitude moments makes use of the product moment of signal magnitude for classification of MPSK/MQAM signals.
计算结果表明渐近波形估计技术与矩量法结合可以逼近矩量法逐点计算的结果，且计算效率大大提高。
The numerical results are in good agreement with the results achieved by the method of moments at each frequency or any incident angle, while the computational efficiency is considerably improved.
计算结果表明：渐近波形估计技术不但能准确地逼近矩量法的精确数值解，还可以较快的提高计算速度，但在加速计算导体宽角度与宽频域雷达散射截面时具有不同的效果。
The computation results indicate that the AWE technique not only can well approximate the exact numerical solution, but also improve the velocity of calculation and save the calculation time of CPU.
计算结果表明：渐近波形估计技术不但能准确地逼近矩量法的精确数值解，还可以较快的提高计算速度，但在加速计算导体宽角度与宽频域雷达散射截面时具有不同的效果。
The computation results indicate that the AWE technique not only can well approximate the exact numerical solution, but also improve the velocity of calculation and save the calculation time of CPU.
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