Far Infrared and Submillimeter Scattering. II. Attenuation by Clouds and Rain,
RAND CORP SANTA MONICA CALIF
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The report provides reliable estimates of the attenuation of radiation at such wavelengths through various types of water clouds as well as moderate and heavy rain. The attenuation properties of hydrometeors are of prime interest. In particular, the use of some new cloud- and raindrop-size distribution models that were developed for this study is described and justified. Attenuation computations for these models are presented, and these estimates are then analyzed and compared with other work and with observation. Results imply that interference with current tactical air operations by clouds and fog can be substantially reduced if target acquisition and munitions guidance systems that operate at frequencies near 230 GHz can be developed.
- Radiofrequency Wave Propagation