초록 ▼

A radiometer system detects naturally occurring atmospheric microwave radiation in three bands at approximately 20, 30, and 90 GHz. Signals representing radiation intensity at each of these bands is converted into a brightness temperature and used as a system input to a processing system that yields

A radiometer system detects naturally occurring atmospheric microwave radiation in three bands at approximately 20, 30, and 90 GHz. Signals representing radiation intensity at each of these bands is converted into a brightness temperature and used as a system input to a processing system that yields system outputs including the atmospheric ice water path, liquid water path, and water vapor content. A parameterized radiative transfer model is used to quantify radiation emanating from the atmosphere. The applied signal processing technique provides measurement of the total ice column in the atmosphere, and simultaneously provides accurate measurement of water vapor and liquid water. A calibration technique enhances the accuracy of ice detection measurements by correcting for the effects of absorptive atmospheric components, such as water vapor and liquid water.

대표청구항 ▼

[ I claim:] [1.] A microwave radiometer system for use in measuring atmospheric water content, comprising:means for passively detecting an intensity of atmospheric radiation in a plurality of frequency bands, and for providing signals representative of said intensity in each band;means responsive to

[ I claim:] [1.] A microwave radiometer system for use in measuring atmospheric water content, comprising:means for passively detecting an intensity of atmospheric radiation in a plurality of frequency bands, and for providing signals representative of said intensity in each band;means responsive to receipt of said signals for converting said signals to brightness temperature values corresponding to said plurality of bands;means for simultaneously processing said brightness temperature values to produce data indicative of atmospheric water content including water vapor, cloud water, and ice.