Real-Time Axial Ratio Polarization Correction for Air-Ground Antennas
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Solution Overview
Problem
Existing antenna systems face polarization mismatch issues, leading to inefficient communication between airborne and ground segments due to axial ratio variations as the antenna's orientation changes, resulting in significant power loss and reception distortion.
Innovation Solution
A real-time antenna polarization correction system that uses a processor and memory to adjust the axial ratio of ground receiving antennas based on the relative location and polarization behavior parameters of airborne transmitting antennas, optimizing communication by dynamically adapting the polarization to match the desired behavior parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the antenna operates with fixed polarization orientation, then the system structure is simple, but polarization mismatch occurs when the antenna rotates off boresight causing communication inefficiency
Solution Approach 1:
The patent implements dynamic polarization correction by continuously adjusting the axial ratio of the receiving antenna based on real-time relative location data between airborne and ground segments. The system transitions from static fixed polarization to dynamic adaptive polarization, maintaining optimal communication efficiency as the antenna orientation changes during rotation off boresight.
Solution Approach 2:
The system changes the polarization parameter (axial ratio) of the receiving antenna in real-time based on the relative location between transmitting and receiving segments. By dynamically adjusting this parameter according to orientation changes, the system maintains polarization alignment without requiring complex mechanical reorientation mechanisms.
2Adaptability or versatility
If the antenna rotates off boresight to change orientation, then the coverage area increases, but the axial ratio deteriorates causing power loss and reception distortion
Solution Approach 1:
The system employs feedback mechanisms where the processor continuously monitors the relative location between airborne transmitting and ground receiving segments, computes the required axial ratio adjustment, and applies real-time polarization correction. This closed-loop feedback ensures that polarization efficiency is maintained even when the antenna rotates to different orientations for expanded coverage.
Solution Approach 2:
The receiving antenna's polarization characteristics are dynamically adjusted based on real-time orientation data. As the antenna rotates off boresight to increase coverage area, the system dynamically compensates for axial ratio deterioration through electronic polarization correction, maintaining reliable communication across varied orientations.
3Productivity
If real-time polarization correction is applied, then communication efficiency improves, but computational complexity and processing requirements increase
Solution Approach 1:
The system performs preliminary computations of polarization behavior parameters and stores them in lookup tables before real-time operation. During actual communication, the processor quickly retrieves pre-computed values based on relative location, significantly reducing real-time computational complexity while maintaining high communication efficiency through rapid polarization adjustment.
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
The system enhances communication efficiency by minimizing polarization loss and distortion, improving reception sensitivity and operational range, and providing flexibility in ground segment location.
Implementation Method 1
Axial ratio typically refers to a parameter which characterizes an antenna's polarization e.g. the polarization of the electromagnetic wave that the antenna radiates in the far field
Data Source
AI summary
Antenna system comprising processor/s in data communication with receiving segment/s in motion on ground and computer memory accessible to processor which stores a computer representation indicative of desirable polarization behavior parameter/s of the airborne transmitting segment, for each relative location of the airborne and ground segments, the processor providing a current relative location of the airborne transmitting and receiving segment/s on the ground, accessing a desirable polarization behavior parameter associated with the current relative location of the airborne and receiving segment/s on ground from the computer representation, accessing a current polarization behavior parameter of the receiving segment/s' antenna, computing a real time adjustment of the polarization's axial ratio which, if applied to the receiving segment antenna, will change the receiving segment antenna's polarization behavior parameter from the current polarization behavior parameter to the stored one, and feeding the real time adjustment to the receiving segment antenna.