The Spectrum of Electromagnetic Scatter from an Angularly Periodic Ensemble of Bodies Rotating in the Presence of Another Angularly Periodic Ensemble
Abstract
A rotating ensemble of bodies with angular periodicity rotates in the presence of a similar, stationary ensemble of generally different periodicity. The structure is illuminated from an electromagnetic source. The scattered field is modulated periodically as the scatterer rotates, and contains a discrete spectrum of frequency components. The scattered spectrum is predicted through electromagnetic field theory. The theory has been developed such as to exploit the angular periodicities of the ensembles and thereby reduce the computational load by a considerable factor. The spectrum consists of lines separated by the 'body rate', i.e., the rate of rotation multiplied by the number of bodies in the rotating ensemble The total bandwidth is several times greater than that for the rotating ensemble in free-space, due to electromagetic interaction between the two ensembles.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2001
- Accession Number
- ADA392020
Entities
People
- John Cashman
Organizations
- Defence Science and Technology Group