Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Distributive type parameters
Patent
1996-04-01
1998-07-07
Regan, Maura K.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Distributive type parameters
7317026, G01W 102
Patent
active
057774811
ABSTRACT:
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.
REFERENCES:
patent: 4873481 (1989-10-01), Nelson et al.
patent: 4978962 (1990-12-01), Hisasa et al.
patent: 5065615 (1991-11-01), Hill
patent: 5231404 (1993-07-01), Gasiewski
patent: 5381442 (1995-01-01), Brown et al.
patent: 5526676 (1996-06-01), Solheim et al.
patent: 5654700 (1997-08-01), Prata
J. Vivekanandan, et al., Ice Water Path Estimation and Characterization Using Passive Microwave Radiometry, Journal of Applied Meterology, vol. 30, Oct. 1991, No. 10, pp. 1407-1421.
C. R. Cabrera-Mercader, et al., Passive Microwave Relative Humidity Retrievals Using Feedforward Neural Networks, IEEE Transactions on Geoscience and Remote Sensing, vol. 33, No. 6, Nov. 1995, New York, US.
F. Del Frate et al., Retrieval Of Atmospheric Parameters From Radiometric Measurements Using Neural Networks, Proceedings 1995 International Geoscience & Remote Sensing Symposium, Firenze, IT, 10-14 Jul. 1995, vol. 2, p. 1134.
C.T. Butler et al., Retrieving Atmospheric Temperature Parameters For DMSP SSM/T-1 Date With A Neural Network, Journal of Geophysical Research, vol. 101, No. D3, Mar. 20, 1996.
Pilewskie, P. and Twomey, S., "Discrimination of Ice From Water in Clouds by Optical Remote Sensing," Atmospheric Res., vol. 21 (1987), pp. 113-122. month unavailable.
Regan Maura K.
University Corporation For Atmospheric Research
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