The Hybrid Wavefront Resonance Method,
Abstract
When observed over long periods, scattered returns from targets illuminated by broad band signals reveal distinctive features in the early and late time regimes. The features can be explained in terms of the different wave phenomena, progressive and oscillatory, that are dominant during these respective intervals. The former represent wavefront arrivals, and the latter full body resonances. A recently developed hybrid theory has formalized the connection between them and has provided new interpretations that did not emerge in earlier treatments. These interpretations can clarify issues which have arisen within the singularity expansion method (SEM), in particular, the adequacy of the expansion at early times. Here the hybrid wavefront resonance theory is reviewed, first within the rigorous context of scatering by a circular cylinder, and then via a ray analysis of scattering by a general (composite) object. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1987
- Accession Number
- ADP005647
Entities
People
- Ehud Heyman
Organizations
- Tel Aviv University