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The influence of polarization on millimeter wave propagation through rainThe influence of polarization on millimeter wave propagation through rain is investigated. The experimental equipment consisted of a 1.43 km line-of-sight path with 4-foot diameter dual-polarized parabolic reflector antennas at each end. Linearly polarized 17.65 GHz signals were transmitted with the electric field vectors at plus 45 degrees and minus 45 degrees from the vertical. These polarizations were initially chosen to maximize the measured depolarization at any given rainfall rate. Later it was discovered that the cross polarization levels measured with plus or minus 45 degree linearly polarized signals are theoretically the least sensitive to variations in drop canting angle and this choice of polarization reduces the scatter in the data.
Document ID
19740013685
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Bostian, C. W. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Stutzman, W. L. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Wiley, P. H. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Marshall, R. E. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1974
Subject Category
Communications
Report/Patent Number
NASA-CR-138150
IR-2
Accession Number
74N21798
Funding Number(s)
CONTRACT_GRANT: NGR-47-004-091
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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