Popis: |
The half-plane which was the subject of the preceding chapter is the special case of a wedge whose interior angle is zero, but for a complex target such as an aircraft, a high frequency simulation requires the knowledge of the diffraction coefficient for a wedge of arbitrary angle. Indeed, the diffraction coefficient for a perfectly conducting wedge is at the heart of such well-known techniques as the uniform geometrical theory of diffraction (UTD), the physical theory of diffraction (PTD), and to extend these to impedance surfaces, it is essential to consider diffraction by the impedance wedge. |