TM波照射时喷气发动机进气道的极化散射矩阵

对ＴＭ波照射下喷气发动机进气道的极化散射矩阵进行了分析计算。通过将喷气发动机进气道等效成规则的圆波导腔结构，用多个波导模的叠加表示进气道内电磁场，并采用平面孔径辐射场的克希荷夫积分公式和电磁场互易定量，求得了进气道的极化散射矩阵，从而将复杂的腔体散射问题简化到只需求在规则波导模激励下喷气发动机终端的反射系数。所得结论对单、双站散射均适用。

THE POLARIZATION SCATTERING MATRIX OF JET ENGINE INLET IRRADIATED BY TM RADAR WAVE

The polarized scattering matrix of inlet irradiated by TM wave is analyzed and calculated in this paper. The jet engine inlet is effected as a circular wave guide structure, and the Electromagnetic field in inlet is expressed as sum of wave guide modes. Kirchhoff's radiating field integral formula of plane aperture and the reciprocal theorem of EM fields are adopted. The polarized scattering matrix of inlet are abtained. Thereby scattered problem of complicated cavity is simplified as finding reflected coefficients of jet engine termination impelled by rule wave guide modes. Conclusions obtained are suitable for mono station and bi station.