SYSTEMS AND METHODS FOR CALIBRATING DUAL POLARIZATION RADAR SYSTEMS

摘要

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. Thus, it is unnecessary to suspend weather monitoring activities in order to perform the calibration, and the calibration can be run as often as is desired without interfering with such weather monitoring activities. 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.

主权项

1. A dual polarization radar system, comprising:
memory; a transmission system configured to wirelessly transmit pulses; a receive system configured to store, in the memory, measurement data indicative of returns from the transmitted pulses, the measurement data defining a plurality of bins comprising power values indicative of the returns; and logic configured to identify 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.