M. C. Thompson Jr.; L. E. Wood; H. B. Janes

Abstract: Supported by data taken over a 65-km. slant path with fixed terminals, this report suggests exploitation of the dispersion between radio and optical signals for studying the atmospheric errors in radio range measurements over propagation paths with a moving terminal. Correlations between the microwave range variability and the microwave­optical dispersion are heavily concentrated near unity. The variations of the dispersive range difference very closely approximate the corresponding atmospheric variation of the microwave range.

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