Citation
Abstract
The calibration coefficients of existing water vapor radiometers are dependent upon meteorology profiles. This is shown to be due mainly to incorrect frequency pairs. By properly selecting an optimum frequency pair, the dependency can be reduced to a relatively small amount which can be handily adjusted by surface measurement alone. Hence, a universal calibration equation is applicable to all environmental conditions — site, seasonal and diurnal variations. Optimum frequency pairs are systematically searched. Error analysis indicates that calibration for the water vapor phase delay accurate to <2 cm is possible at all elevation angles > 15 degrees.
Details
- Volume
- 42-43
- Published
- February 15, 1978
- Pages
- 67–81
- File Size
- 1019.7 KB