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Page 50

The variations of the refractive index in the atmosphere which are of paramount

importance for propagation problems are determined indirectly by measurements

of the temperature and

The variations of the refractive index in the atmosphere which are of paramount

importance for propagation problems are determined indirectly by measurements

of the temperature and

**humidity**. From the values of these latter the refractive ...Page 257

It follows that the estimation of range can be reduced to a measurement of sea

temperature and specific

under conditions of neutral equilibrium is given by (<1. ~ On) r (/ = - Wo q, is the ...

It follows that the estimation of range can be reduced to a measurement of sea

temperature and specific

**humidity**at masthead level; for the duct thickness dunder conditions of neutral equilibrium is given by (<1. ~ On) r (/ = - Wo q, is the ...

Page 268

The Vertical Distribution of Temperature and

January 14-15, 1944, JEIA 10318, Report JMRP 6, MO, Feb. 26, 1944. CP-333.3-

M2 213. Analysis of Temperature and

Report ...

The Vertical Distribution of Temperature and

**Humidity**at Rye on the Night ofJanuary 14-15, 1944, JEIA 10318, Report JMRP 6, MO, Feb. 26, 1944. CP-333.3-

M2 213. Analysis of Temperature and

**Humidity**Records at Rye, JEIA 10319,Report ...

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### Common terms and phrases

altitude Anomalous Propagation antenna attenuation azimuth band characteristic values Committee on Propagation computed constant coverage diagram CUDWR curvature curve decibels decrease determine diffraction diffraction region direct distance Division 14 Report duct earth effect elevation equation equipment experiments factor field intensity field strength free space frequency Fresnel zones functions gradient ground height horizontal humidity index of refraction JEIA land layer lobe angles maximum measurements meter method microwave miles mode moisture NDRC nonstandard propagation NRSL obtained operational optical OSRD path difference pattern permanent echoes phase plane plotted polarization problem radar radar cross section Radio Propagation Radio Waves radius range receiver reflection coefficient refractive index region Research signal strength Snell's law standard atmosphere superrefraction target temperature inversion theory tion transmission transmitter trapping Tropospheric variation vertical Wave Propagation Wave Propagation Group wavelength weather X band zone