Abstract:The Adaptive Integral Method (AIM) in conjunction with the Asymptotic Waveform Evaluation (AWE) technique is presented for fast Radar Cross Section (RCS) calculation of arbitrarily shaped perfect electric conductor targets over a broad frequency band. The application of AWE enables fast frequency sweep analysis. The AIM is employed to reduce the matrix storage and to accelerate the matrix-vector multiplications in the solutions of the Taylor coefficients, the computational rate is improved and the memory requirement is reduced. Combining with Automatic Differentiation (AD) technique, the high order frequency derivatives of Green’s function required in the hybrid method are calculated. The numerical results presented in this paper are compared with the results obtained by the conventional AIM point-by-point calculations. The proposed hybrid technique can greatly reduce the computation time without loss of accuracy.
王兴, 龚书喜, 关莹, 吕政良, 马骥. AIM结合渐近波形估计技术快速分析目标宽带电磁散射特性[J]. 电子与信息学报, 2011, 33(8): 1975-1980.
Wang Xing, Gong Shu-Xi, Guang Ying, Lv Zheng-Liang , Ma Ji. Fast Analysis of Electromagnetic Scattering of Targets over a Broad Frequency Band Using AIM with Asymptotic Waveform Evaluation. , 2011, 33(8): 1975-1980.