Radar Antenna Stabilization via Vertical Beam Switching
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Solution Overview
Problem
Current weather radar systems face challenges in accurately adjusting antenna positions due to dynamic and constant pointing errors caused by installation issues, airframe changes, and atmospheric phenomena, which affect the quality of radar beam positioning and require real-time compensation to ensure optimal performance.
Innovation Solution
A method and system that utilize data from first and second portions of the antenna to calculate the angle within the beam to the terrain, allowing for adjustments to compensate for antenna position errors, including elevation, pitch, and roll offsets, using a processor and antenna calibration circuit to determine and correct positioning errors in real-time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional antenna adjustment methods are used, then installation and mounting errors can be corrected, but dynamic errors from airframe changes and atmospheric phenomena cannot be compensated
Solution Approach 1:
The patent implements a dynamic error compensation system that continuously monitors and adjusts for changing antenna position errors caused by airframe deformation, atmospheric conditions, and aircraft maneuvers. The system uses real-time data from multiple radar beams to calculate and correct elevation, pitch, and roll offsets, transforming the static calibration approach into an adaptive dynamic system that maintains accuracy throughout the flight.
2Reliability
If real-time antenna position adjustment is implemented, then dynamic pointing errors are compensated, but system complexity increases
Solution Approach 1:
The patent employs a feedback mechanism where the radar system continuously monitors returns from multiple beams, calculates position errors based on comparative analysis, and feeds this information back to the antenna control system for real-time correction. This closed-loop feedback approach enables automatic compensation for dynamic errors without requiring complex manual intervention or overly sophisticated hardware modifications.
3Measurement precision
If multiple antenna portions are used for angle determination, then positioning accuracy is improved, but data processing complexity increases
Solution Approach 1:
The patent divides the antenna aperture into multiple distinct portions or beams, each independently measuring returns from different angular sectors. By segmenting the measurement process across multiple beams and then integrating the results through comparative analysis, the system achieves higher angular precision while managing data processing complexity through structured computational approaches.
Data Source
AI summary
A method of adjusting a position of an antenna to reduce a position error comprises receiving first data associated with first returns associated with a first portion of an antenna. The method further comprises receiving second data associated with second returns associated with a second portion of the antenna, wherein the first portion is different than, intersects with, or includes the second portion. The method further comprises determining the angle to the terrain using the first and second data, whereby the angle is used to adjust or compensate for the position error of the antenna.