Systems and methods for calibrating dual polarization radar systems
First Claim
1. A dual polarization radar system, comprising:
- memory;
a transmission system configured to wirelessly transmit pulses;
a receive system configured to receive returns from the transmitted pulses and to store, in the memory, measurement data indicative of the returns, the measurement data defining a plurality of bins comprising reflectivity values indicative of the returns; and
logic configured to analyze the reflectivity values for identifying which of the bins are indicative of returns from spherical objects, wherein the logic is further configured to calibrate the dual polarization radar system based on the identified bins.
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Abstract
A dual polarization radar system is calibrated based on real-time data measurements, such as measured horizontal and vertical reflectivities, ZH and ZV. In this regard, the radar system analyzes the reflected power measurements to identify which measurements are associated with reflections from a respective spherical object. Using such measurements, the system determines a system differential reflectivity value, and combines such value with reflected power measurements for calibration. Since the calibration is based on real-time data measurements, the calibration process may run simultaneously with the collection of weather data. Further, the calibration process is immune to the weather events within range of the radar system. Accordingly, it is possible for the calibration to be performed at any time and without interfering with the weather monitoring activities regardless of the types of weather events occurring within the vicinity of the radar system.
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Citations
26 Claims
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1. A dual polarization radar system, comprising:
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memory; a transmission system configured to wirelessly transmit pulses; a receive system configured to receive returns from the transmitted pulses and to store, in the memory, measurement data indicative of the returns, the measurement data defining a plurality of bins comprising reflectivity values indicative of the returns; and logic configured to analyze the reflectivity values for identifying which of the bins are indicative of returns from spherical objects, wherein the logic is further configured to calibrate the dual polarization radar system based on the identified bins. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 23, 24)
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11. A method for use in a dual polarization radar system, comprising:
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wirelessly transmitting pulses from the dual polarization radar system; receiving returns from the transmitted pulses at the dual polarization radar system; storing, in memory, measurement data indicative of the returns, the measurement data defining bins comprising reflectivity values indicative of the returns; analyzing the reflectivity values; identifying a plurality of the bins that are indicative of returns from spherical objects based on the analyzing; and calibrating the dual polarization radar system based on the identifying. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 25, 26)
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20. A method for use in a dual polarization radar system, comprising:
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wirelessly transmitting pulses from the dual polarization radar system; receiving returns from the transmitted pulses at the dual polarization radar system; measuring the returns thereby providing a plurality of measurements; storing, in memory, data indicative of the measurements; determining, based on the data, whether each of the measurements is indicative of a respective spherical object; identifying a plurality of the measurements indicative of spherical objects based on the determining; and calibrating the dual polarization radar system based on the identifying. - View Dependent Claims (21, 22)
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Specification