MISERS BLUFF Electromagnetic Propagation Experiments. Volume III-Preliminary Results of the UHF-EHF Radar-Scattering and Coherent-Transmission Experiments.
Abstract
SRI International fielded four electromagnetic propagation experiments during the MISERS BLUFF II high explosive tests. Two of the four experiments are discussed here, selected preliminary results are presented, and some tentative conclusions drawn. The UHF-EHF Coherent-Transmission Experiment measured the amplitude and phase changes suffered by a number of phase-coherent CW signals transmitted through a volume of space above ground zero. The signals experienced phase retardations and absorption due to the mass of soil injected into the signal paths, and further extinction due to scattering loss from the dust particles. Diffractive and refractive propagation effects also occurred. The SHF-EHF-Scattering Experiment used a four-frequency radar system to measure backscatter from and transmission losses through the dust clouds in the 10-GHz to 100-GHz range. Radar effects of dust clouds were measured, and data were collected from which dust densities and particle-size distributions can be inferred. A great deal of internal structure was evident in the MBII-2 dust cloud. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1979
- Accession Number
- ADA087998
Entities
People
- Alan A. Burns
Organizations
- SRI International