Location
Cocoa Beach, FL
Start Date
5-4-1965 8:00 AM
Description
Range measuring systems are limited in accuracy by uncertainties in the atmospheric refraction correction. The effects of water vapor are difficult to evaluate and are responsible for most of the problem. The application of a microwave radiometer to measure the random noise radiation from water molecules along a transmission path can lead to a precise determination of the water vapor content of the atmosphere. The refraction correction can then be made to an accuracy of less than 1% as compared to present methods which give 3 - 5%.
Microwave Atmospheric Refraction Correction Radiometer
Cocoa Beach, FL
Range measuring systems are limited in accuracy by uncertainties in the atmospheric refraction correction. The effects of water vapor are difficult to evaluate and are responsible for most of the problem. The application of a microwave radiometer to measure the random noise radiation from water molecules along a transmission path can lead to a precise determination of the water vapor content of the atmosphere. The refraction correction can then be made to an accuracy of less than 1% as compared to present methods which give 3 - 5%.
