Spherical Dual-Polarization Phased Array Radar for Stable Weather Scanning
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Solution Overview
Problem
Current phased array weather radars suffer from low accuracy in detecting meteorological targets due to changes in antenna gain and beam width during scanning, and mechanical rotation scanning limits flexibility in tracking targets simultaneously.
Innovation Solution
A spherical dual-polarization phased array weather radar system with a spherical crown phased array antenna module, digital transceiver module, and signal processing module, where dual-polarized micro-strip radiation units are adjusted to maintain consistent beam directions with the spherical support frame, enabling two-dimensional electric scanning without changing beam width or antenna gain, and utilizing electronic switches and digital transmission networks for signal processing and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If planar phased array antenna is used for scanning, then scanning speed is improved, but antenna gain and beam width change during scanning causing low detection accuracy
Solution Approach 1:
The patent adopts a spherical phased array antenna structure instead of a planar array. The spherical geometry ensures that beam scanning occurs along the surface of a sphere, maintaining constant distance from the center and preserving consistent antenna gain and beam width characteristics throughout the scanning process, thereby resolving the accuracy degradation issue while maintaining high scanning speed
2Ease of operation
If mechanical rotation scanning is adopted, then beam direction control is improved, but flexibility in tracking multiple targets simultaneously is reduced
Solution Approach 1:
The patent replaces mechanical rotation scanning with electronic phased array scanning. By using phase shifters and amplitude controllers to electronically steer beams, the system can rapidly switch between multiple scanning directions and simultaneously track multiple meteorological targets without the mechanical constraints that limit traditional rotation-based systems
3Device complexity
If cylindrical antenna with phased array scanning is used, then mechanical rotation is eliminated, but antenna gain and beam width still change during pitching beam scanning
Solution Approach 1:
The patent transitions from a cylindrical antenna geometry to a spherical phased array configuration. The spherical geometry fundamentally differs from the cylindrical approach by ensuring that all radiation elements are equidistant from the center, which maintains constant antenna gain and beam width characteristics during scanning operations, thereby eliminating the precision degradation issue present in cylindrical designs
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances the accuracy of meteorological target detection by maintaining stable beam width and antenna gain during scanning, allowing for improved flexibility and accuracy in tracking targets across different areas, and providing timely and accurate meteorological data.
Implementation Method 1
generating a frequency modulation signal or a phase coding signal required for detecting meteorological targets
Implementation Method 2
generating a frequency modulation signal or a phase coding signal required for detecting meteorological targets
Implementation Method 3
receiving an echo signal reflected by the target
Data Source
AI summary
The present disclosure relates to spherical dual-polarization phased array weather radar. The spherical dual-polarization phased array weather radar comprises a spherical crown phased array antenna module, a digital transceiver module and a signal processing module, wherein the spherical crown phased array antenna module comprises a spherical support frame and a plurality of dual-polarization micro-strip radiation units; the dual-polarized micro-strip radiation units are tightly arranged on the spherical support frame; the spherical crown phased array antenna module is used for detecting weather; wireless transmission is carried out between the digital transceiver module and the spherical crown phased array antenna module; the digital transceiver module is used for generating a frequency modulation signal or a phase coding signal required for detecting meteorological targets and receiving an echo signal reflected by the target; and the signal processing module is connected with the digital transceiver module.