Dynamic Interference Reduction for Antenna Beam Tracking
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Solution Overview
Problem
Existing communication systems struggle to effectively mitigate interference in dynamic environments where the locations of desired and interfering signals vary with time, particularly in satellite and terrestrial communications involving mobile or stationary platforms with continually changing beam directions.
Innovation Solution
A system with multiple beams that independently and dynamically track desired and interfering signals, using an interference reduction processor to dynamically couple and process signals, adjusting amplitude and phase to cancel or reduce interference, employing techniques such as digital beamforming and phased arrays to maintain optimal signal-to-noise ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional interference reduction techniques are used with static beam pointing, then interference cancellation is effective, but the system cannot adapt to dynamic environments where signal locations vary with time
Solution Approach 1:
The patent applies dynamics by making the beam pointing directions time-varying and adaptive. The system continuously updates the beam directions to track both desired signals and interferers in dynamic environments, allowing the interference reduction system to maintain effectiveness as signal locations change with time.
Solution Approach 2:
The system employs feedback mechanisms where the detected desired signal and interferer locations are fed back to continuously adjust the beam pointing directions. This feedback loop enables the system to adapt to changing environmental conditions while maintaining reliable interference cancellation.
2Adaptability or versatility
If multiple independent tracking beams are used to follow desired and interfering signals, then interference reduction in dynamic environments is achieved, but system complexity increases
Solution Approach 1:
The patent applies universality by designing a multi-beam antenna system where multiple beams serve dual purposes: primary beams track desired signals while secondary beams track interferers. This multi-functional approach allows the system to handle both signal acquisition and interference reduction within a unified framework, managing complexity through functional integration.
Solution Approach 2:
The system segments the antenna beams into distinct functional groups: primary beams for desired signal tracking and secondary beams for interferer tracking. This segmentation allows independent optimization of each beam type while maintaining overall system coordination, managing complexity through functional decomposition.
3Reliability
If beam directions are continuously adjusted to track moving signals, then communication quality is maintained, but interference from other directions increases
Solution Approach 1:
The patent converts the harmful effect of interferers into a beneficial tracking target. By using secondary beams to actively track interferer locations, the system identifies and characterizes interference sources, then uses this information to form nulls or reduce gain in those directions, transforming the interference problem into an opportunity for targeted interference reduction.
Solution Approach 2:
The system introduces secondary tracking beams as intermediary elements between the primary communication beams and the interferers. These secondary beams serve as mediators that detect and report interferer locations, enabling the primary beams to adjust their patterns without directly interacting with the interferers, thus maintaining signal tracking while reducing interference exposure.
Data Source
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AI summary
A method for operating a satellite communications terminal including an antenna system. The method comprises: controlling the antenna system to form a first antenna beam to monitor the sky for available satellites; and updating in the satellite communications terminal a real-time internal model of available satellites. The satellite communications terminal comprises: an antenna configured to form a first antenna beam to monitor the sky for available satellites; and a processor configured to update a real-time internal model of available satellites.