Propagation in Striated Media
Abstract
The propagation of radar through a striated plasma has been analyzed on the basis of random walk photon scattering, geometric optics refraction at a thin phase screen, plane wave scattering from a thin screen in the Fraunhofer limit and the observables to a monopulse system using a wave front integration implementation of Huygens' principle over a thin phase screen. The latter two were carried out for screens of both large and small phase variance. The scattering was related to the properties of the plasma for a variety of distribution functions of striation sizes. For reasonable distributions, a similar 'effective' striation size is obtained. This allows the calculation of the angular variance of the scattered power which is gaussianly distributed for most significant cases. In the geometric optics regime the distribution of density of allowable multipath rays is gaussianly distributed and the power distribution is identical for all rays. The signal processor sees an unmodified but attenuated component and a random-phased, scattered component that leads to Rician amplitude statistics. The results of the various approaches are all compatible and furnish a single unified description of the perturbed signal.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1976
- Accession Number
- ADA047975
Entities
People
- L. Shaeffer
- R. W. Hendrick