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An improved model for diversity gain on earth‐space propagation paths
Author(s) -
Hodge D. B.
Publication year - 1982
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs017i006p01393
Subject(s) - baseline (sea) , azimuth , elevation (ballistics) , diversity gain , diversity (politics) , diversity scheme , space (punctuation) , function (biology) , geodesy , mathematics , physics , statistics , geology , computer science , geometry , beamforming , oceanography , mimo , estimator , evolutionary biology , sociology , anthropology , orthogonal frequency division multiplexing , biology , operating system
An empirical model has been generated to estimate diversity gain on earth‐space propagation paths as a function of earth terminal separation distance, link frequency, elevation angle, and angle between the baseline and the path azimuth. This analysis utilized 34 diversity experiments which have been conducted in Canada, England, Japan, and the United States during the past decade. The resulting model reproduces the entire experimental data set with an rms error of 0.73 dB. The separation distance dominates the dependence of the diversity gain. The dependence on link frequency is small but significant. No identifiable dependence on baseline orientation was found.