Geometrical Theory of Diffraction for High-Frequency Coherence Functions in a Weakly Ramdom Media with Inhomogeneous Background Profile,
POLYTECHNIC UNIV FARMINGDALE NY WEBER RESEARCH INST
Pagination or Media Count:
The localization of high-frequency wave propagation around ray trajectories, and the reflection and or diffraction of these local plane wave fields by boundaries, inhomogeneities and or scattering centers has been combined via the Geometrical Theory of Diffraction GTD into one of the most effective means of analyzing high-frequency wave phenomena in complex deterministic environments. These constructs are here incorporated into a stochastic propagation and diffraction theory for statistical moments of the high-frequency field in a weekly fluctuating medium with inhomogenous background profile, provide that the correlation length of the fluctuations is small compared with the scale of variation, but large compared with the local wavelength in the fluctuation-free background. Canonical problems of deterministic GTD furnish the propagators and the local reflection, refraction and diffraction coefficients that relate incoming to outgoing wavefields.
- Radiofrequency Wave Propagation
- Electricity and Magnetism