Estimation of tropospheric refractive bending from atmospheric emission measurements


  • Marshall A. Gallop Jr.,

  • Larry E. Telford


Refraction effects cause radio waves travelling through the atmosphere to be bent. Without knowledge of the atmospheric parameters along the ray path, the degree of bending cannot be calculated deterministically. Since atmospheric emission at microwave wavelengths is dependent on temperature, pressure, and relative humidity, radiometric data contain information about these parameters. This study will make use of a Monte Carlo simulation of the atmosphere to demonstrate that atmospheric emission measurements can be used with surface refractivity to increase greatly the accuracy with which refractive bending can be estimated.