Dual-polarization weather radar built-in verification device and method

By integrating network modules and other components into the radar system, a dual-polarization weather radar calibration device has been developed, solving the problem that existing devices cannot calibrate dual-polarization parameters. This enables efficient and accurate radar polarization parameter calibration and signal processing, while reducing the complexity and cost of the device.

CN120871048APending Publication Date: 2025-10-31CHENGDU UNIV OF INFORMATION TECH
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Patent Information

Application Number
CN202510931259.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-07
Publication Date
2025-10-31

AI Technical Summary

Technical Problem

Existing dual-polarization weather radar calibration devices cannot effectively calibrate the dual-polarization parameters of radar systems, especially the radio frequency signals with complex weather echo characteristics. Furthermore, existing devices are complex in structure and expensive, making them unsuitable for periodic calibration within radar systems.

Method used

Design an in-flight calibration device for a dual-polarization weather radar, comprising a network module, a data storage module, an interface module, a main control module, an RF signal generation module, and a gain control module. This device can generate horizontal and vertical channel RF signals with known dual-polarization information for calibrating the accuracy of the radar receiver and signal processing.

Benefits of technology

This enables efficient and accurate dual polarization parameter verification within the radar system, improving the accuracy of radar polarization parameter estimation and the performance of signal processing algorithms, while reducing the complexity and cost of the device.

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Abstract

The invention relates to the technical field of electroencephalogram signal processing, and discloses a dual-polarization weather radar built-in verification device and method. The device comprises a network module used for receiving external data and instructions; the data storage module is used for storing weather radar echo IQ data of an H channel and a V channel and corresponding base data; the interface module is used for receiving parameter information of the radar and calculating azimuth information irradiated by the current radar; the main control module is used for preprocessing IQ data by using the azimuth information and processing a control command; the radio frequency signal generation module is used for performing up-conversion and digital-to-analog conversion on the intermediate frequency signals of the H channel and the V channel and modulating the intermediate frequency signals into radio frequency analog signals; and the gain control module is used for adjusting the power of the output radio frequency analog signal and sending the radio frequency analog signal to a dual-polarization weather radar receiver. According to the invention, the dual-channel difference and dual-polarization signal processing accuracy of the dual-polarization weather radar receiver can be tested.
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