【摘要】 该文系统研究了MBPE技术求解三维理想导体雷达散射截面(RCS)的宽频带特性.通过把电流在感兴趣的频率点处采用泰勒级数或者Pade有理函数展开,来获得理想导体某频带范围内的电流,从而可求出宽带雷达散射截面.同时,该文还将有理逼近应用于RCS的空域和频域双内插.数值结果表明MBPE技术获得的结果与确切解在宽频带、大角度范围内吻合良好,计算效率大大提高.更多还原

【Abstract】 An implementation of the Model Based Parameter Estimation(MBPE) technique is presented for obtaining the RCS frequency response of arbitrarily shaped Perfect Electric Conductor (PEC) bodies. The electric current is expanded in a Taylor series or Pade rational function around the frequency of interest, thus the scattering field is obtained over the bandwidth. Rational function fitting model is also used for the interpolation of RCS in both spatial domain and frequency domain. A good agreement can be seen between MBPE and the exact solution, and the computational burden is significantly reduced.更多还原