OFF-DIAGONAL ELEMENT ECHO POWER ESTIMATOR FOR POLARIZATION WEATHER RADAR
First Claim
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1. A method comprising:
- propagating a radar signal into a region of interest using a dual polarization radar transmitter;
collecting dual polarization radar echo data scattered form within the region of interest, wherein the radar echo data comprises horizontal and vertical complex voltages;
calculating the covariance matrix from the radar echo data; and
estimating the precipitation profiles from the covariance matrix.
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Abstract
Embodiments of the invention are directed to improving the sensitivity in polarimetric radar data. In particular, embodiments of the invention improve the sensitivity of such systems with improved post processing techniques. The sensitivity can be improved by using the co-polar elements (off diagonal elements) of the covariance matrix in power and/or reflectivity determinations. This can not only improve the sensitivity but may also enhance identification and improve quantitative estimates of precipitation.
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Citations
13 Claims
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1. A method comprising:
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propagating a radar signal into a region of interest using a dual polarization radar transmitter; collecting dual polarization radar echo data scattered form within the region of interest, wherein the radar echo data comprises horizontal and vertical complex voltages; calculating the covariance matrix from the radar echo data; and estimating the precipitation profiles from the covariance matrix. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
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propagating a radar signal into a region of interest using a dual polarization radar transmitter; collecting dual polarization radar data scattered form within the region of interest, wherein the radar data comprises horizontal and vertical complex voltages; calculating the covariance matrix from the dual polarization radar data; and estimating the reflectivity from the covariance matrix. - View Dependent Claims (8, 9)
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10. A radar system comprising:
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a transmitter configured to transmit polarized radar signals into a region of interest; a receiver configured to receive a polarized data scattered from the region of interest, wherein the polarized data comprises horizontal and vertical complex voltages; and a computer system coupled at least with the receiver, wherein the computer system is configured to calculate the covariance matrix of the polarized data and estimate the reflectivity of the region of interest using the covariance matrix. - View Dependent Claims (11, 12, 13)
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Specification