From inside the book
Results 1-5 of 34
Page 10
... moisture in various forms and by dust or other scatterers . 3. Study of the effects of the earth's land and water surface on propagation . a . Determination of reflection coefficients of various surfaces for specular reflection and its ...
... moisture in various forms and by dust or other scatterers . 3. Study of the effects of the earth's land and water surface on propagation . a . Determination of reflection coefficients of various surfaces for specular reflection and its ...
Page 42
... moisture changes rapidly with height . In order to express refraction in quantitative terms Snell's law for a curved earth is used as given by equation ( 14 ) , Chapter 5 : Now let nr cos a = noro cos αo - n = 1 + ( n 1 ) with n r = a ...
... moisture changes rapidly with height . In order to express refraction in quantitative terms Snell's law for a curved earth is used as given by equation ( 14 ) , Chapter 5 : Now let nr cos a = noro cos αo - n = 1 + ( n 1 ) with n r = a ...
Page 43
... moisture content and vice versa . Variations of humidity are common in the lower atmosphere , and they constitute the main cause of refractive index variations , with temperature variations frequently a contributing factor . The six ...
... moisture content and vice versa . Variations of humidity are common in the lower atmosphere , and they constitute the main cause of refractive index variations , with temperature variations frequently a contributing factor . The six ...
Page 46
... moisture variations in any one climate are subject to definite limitations . An extreme moisture change occurs when there is a boundary separating a nearly or fully saturated warm air mass from a very dry cool air mass . Tem- perature ...
... moisture variations in any one climate are subject to definite limitations . An extreme moisture change occurs when there is a boundary separating a nearly or fully saturated warm air mass from a very dry cool air mass . Tem- perature ...
Page 75
... moisture with height will produce a decrease of n 1 which , if strong enough , will again produce a negative slope of the M curve . In Chapter 7 we have dealt with these changes purely from the observational viewpoint . Now the origin ...
... moisture with height will produce a decrease of n 1 which , if strong enough , will again produce a negative slope of the M curve . In Chapter 7 we have dealt with these changes purely from the observational viewpoint . Now the origin ...
Common terms and phrases
altitude angle antenna attenuation azimuth band Chapter Committee on Propagation computed coverage diagram CUDWR curvature curve decibels decrease diffraction diffraction region distance Division 14 Report earth earth radius effects electromagnetic equation equipment errors experiments factor FEET field intensity field strength forecasting free space frequency functions gradient ground h₁ h₂ height horizontal humidity index of refraction JEIA land layer line of sight lobe maximum measurements meter method microwave miles modes moisture NDRC nomogram nonstandard propagation NRSL obtained operational optical OSRD permanent echoes plane polarization problem radar cross section Radio Propagation Radio Waves radius range receiver reflection coefficient refractive index region Research signal strength Snell's law standard atmosphere standard propagation superrefraction surface target temperature inversion theory tion transmitter Tropospheric United variations vertical water vapor Wave Propagation Wave Propagation Group wavelength weather X band zone