Tropospheric Range Error at the Zenith
JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB
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The atmospheric range error in an electromagnetic signal arriving vertically at the earth is measured by the height integral of the refractivity N through the atmosphere N one million n-1 where n is the index of refraction. N in the nonionized atmosphere is the sum of dry and wet components, which are considered separately. Only the dry part is important at optical wavelengths and the present discussion deals principally with this dry part. Data from several thousand meteorological balloons were studied to develop a method for predicting the height integrals of Ndry.
- Atmospheric Physics
- Radiofrequency Wave Propagation