Flight Plan Beam-Null Antenna Control for Airborne RF Interference
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Solution Overview
Problem
Ensuring continuous and reliable communication links between airborne assets and ground stations is challenging due to increasing air traffic, interference from multiple ground base stations, and dynamic RF spectrum environments, which can disrupt communications.
Innovation Solution
Implementing a beam/null steering antenna system in conjunction with a spectrum management system that uses flight plan information to manage RF spectrum channels, dynamically steering beams and nulls to optimize communication links and minimize interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional antenna systems are used, then system simplicity is maintained, but beam steering capability and spatial selectivity are limited
Solution Approach 1:
The antenna system is divided into multiple independent antenna elements that can be individually controlled. Each antenna element contributes to forming specific beams in different spatial directions, enabling the system to achieve beam steering capability by selectively activating and controlling individual segments rather than requiring a completely different antenna architecture.
Solution Approach 2:
The antenna system is designed to perform multiple functions through a single integrated structure. The same antenna elements can form beams in different directions, adjust beam shapes, and adapt to various communication scenarios by changing control parameters, thereby achieving both beam steering capability and spatial selectivity without proportionally increasing overall system complexity.
2Adaptability or versatility
If multiple beams are formed simultaneously, then spatial selectivity and coverage are improved, but system complexity and control difficulty increase
Solution Approach 1:
The system dynamically adjusts beam formation by changing control parameters such as phase and amplitude weights applied to different antenna elements. This dynamic control allows the system to form multiple beams simultaneously in different spatial directions by simply updating control data rather than physically reconfiguring the antenna structure, thereby improving spatial selectivity while managing control complexity through software-based flexibility.
Solution Approach 2:
The system incorporates feedback mechanisms to monitor and adjust beam formation in real-time. By receiving feedback about the actual beam patterns and adjusting control parameters accordingly, the system can maintain spatial selectivity and beam accuracy even when forming multiple beams simultaneously, reducing the operational complexity of managing multiple beam configurations.
3Adaptability or versatility
If beam formation is adjusted in real-time, then adaptability to changing conditions is improved, but processing time and computational complexity increase
Solution Approach 1:
The system pre-calculates and stores beam formation parameters for different spatial configurations. When real-time adjustment is needed, the system retrieves pre-computed parameters or uses simplified control rules rather than performing complex calculations from scratch, thereby achieving real-time adaptability while minimizing processing time through preliminary preparation of control data.
Solution Approach 2:
The system achieves real-time beam adjustment by changing control parameters such as phase shifts and amplitude weights applied to antenna elements. These parameter changes can be implemented through simple digital signal processing operations that modify the complex baseband signals, allowing rapid adaptation to changing communication conditions without requiring time-consuming physical reconfiguration or complex computational routines.
Data Source
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AI summary
Presented herein are system and methods for implementing a flight plan initiated beam/null forming antenna. According to an aspect, a terrestrial (i.e., ground) to air communications network can include a beam/null steering antenna that can be configured to operate in conjunction with a spectrum management system to provide one or more communications links between an airborne radio and a ground-based operator. The beam/null steering antenna can also receive the flight plans of aircraft using the system from the spectrum management system. In one or more examples, the beam/null steering antenna can use the flight plan information provided the spectrum management system to determine if a signal received at the antenna is a known desired signal, a known undesired signal, or an unknown undesired signal. In one or more examples the antenna can be configured to direct a beam or null at a particular signal based on the determination.