Method of determining the humidity and temperature of atmospheric air
First Claim
1. A method of determining the humidity and temperature of atmospheric air at selected distances along a field of view in atmospheric air by passive IR spectrometry, comprising:
- (1) providing an IR spectrometer disposed in atmospheric air;
(2) measuring the values of a plurality of IR power densities received by the spectrometer along a single field of view at a plurality of at least five discrete, selected IR wavelengths;
(3) providing a set of equations which equate the measured IR power density to functions of temperature and humidity at the selected wavelengths; and
(4) calculating from the set of equations the temperature and humidity of the atmospheric air along the field of view at selected range segments along the field of view using approximated values of temperature and humidity along the field of view.
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Accused Products
Abstract
A method is provided for determining the humidity and temperature of atmospheric air at selected distances along a field of view by passive IR spectrometry. An IR spectrometer is provided. A plurality of IR power densities values received by the spectrometer along the field of view at a plurality of discrete, selected IR wavelengths are measured. A set of equations which equate the measured IR power density to functions of temperature and humidity at the selected wavelengths is provided. From the set of equations the temperature and humidity of the atmospheric air along the field of view at selected range segments along the field of view are calculated.
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Citations
29 Claims
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1. A method of determining the humidity and temperature of atmospheric air at selected distances along a field of view in atmospheric air by passive IR spectrometry, comprising:
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(1) providing an IR spectrometer disposed in atmospheric air; (2) measuring the values of a plurality of IR power densities received by the spectrometer along a single field of view at a plurality of at least five discrete, selected IR wavelengths; (3) providing a set of equations which equate the measured IR power density to functions of temperature and humidity at the selected wavelengths; and (4) calculating from the set of equations the temperature and humidity of the atmospheric air along the field of view at selected range segments along the field of view using approximated values of temperature and humidity along the field of view. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of determining the humidity and temperature of atmospheric air at selected distance along a field of view in atmospheric air by passive IR spectrometry, comprising:
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(1) providing an IR spectrometer disposed in atmospheric air; (2) measuring the values of temperature and humidity of air at about ground level at each of a series of positions spaced along a generally radial path extending from near the spectrometer; (3) directing the spectrometer to a reference field of view extending near said path; (4) measuring the values of IR power density received by the spectrometer along the reference field of view at a plurality of discrete, selected wavelengths; (5) providing a set of equations which equate the measured IR power density to functions of temperature and humidity at the selected wavelengths; and (6) calculating from the set of equations the temperature and humidity of the atmospheric air along the reference field of view at selected range segments using the values of temperature and humidity measured along said path as first approximations for solution of the set of equations. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification