## 抄録

The problem of transverse electric plane wave scattering from a rectangular channel which is engraved in a perfect conducting plane is investigated. A Fourier transform technique is employed to express the scattered field in the spectral domain in terms of parallel‐plate waveguide modes. The boundary conditions are enforced on the conducting surface and the channel aperture to obtain simultaneous equations for the transmitted field inside the channel. The simultaneous equations are solved to represent the transmitted field in a series form. By using the stationary phase approximation, the exact expression for the far‐zone scattered field is obtained and the echo width behavior is numerically studied in terms of the scattering angle, frequency, and channel size. It is found that the behavior of the echo width versus the channel depth exibits resonance irrespective of the size of the channel width. An approximate series expression (Kirchhoff solution) for the echo width is valid for high‐frequency scattering regimes (a > 2 λ). We also present an approximate closed form solution for nadir backscattering which is valid when a > 0.2λ.

本文言語 | 英語 |
---|---|

ページ（範囲） | 663-673 |

ページ数 | 11 |

ジャーナル | Radio Science |

巻 | 28 |

号 | 5 |

DOI | |

出版ステータス | 出版済み - 1 1 1993 |

## All Science Journal Classification (ASJC) codes

- 地球惑星科学（全般）
- 電子工学および電気工学
- 凝縮系物理学
- コンピュータ ネットワークおよび通信
- 大気科学
- 地球科学におけるコンピュータ
- 地球化学および岩石学
- 地球物理学
- 器械工学