On the path curvature of electromagnetic waves |
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| Authors: | J Saastamoinen |
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| Institution: | (1) Division of Applied Physics, National Research Council, Ottawa, Canada |
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| Abstract: | To facilitate the calculation of atmospheric refraction from radiometeorological sounding observations, the coefficients of
refraction for light and microwaves have been expressed in the general form k=A.p+B.U+(C·p+D·U) dt/dz+E·dU/dz where p is total
pressure, U is relative humidity and A, B, C, D and E are tabulated functions of temperature t. Three-place tables are given
in metric units for the temperature range −10°C to +30°C.
The paper includes a general discussion of the variation of refraction with weather, and outlines computation procedures for
electromagnetic measurement of long lines on the basis of radiosonde data. |
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