Signal Correction for Environmental Distortion in Phased Arrays
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Solution Overview
Problem
Existing signal correction methods fail to effectively address environmental distortion, particularly time-varying distortions that cause phase and amplitude variations across multiple points in space and time, affecting the accuracy and resolution of signal processing in systems like phased antenna arrays.
Innovation Solution
A method and system that determine and apply unique correction factors for each point in space and time to correct environmental distortion, using a signal processor with multiple antennas to receive and process signals, and iteratively update these factors based on received signals to adaptively compensate for time-varying distortions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If environmental distortion correction is applied to signals received at multiple points in space and time, then signal accuracy and resolution are improved, but the complexity of the correction system increases
Solution Approach 1:
The patent divides the signal correction process into multiple independent correction factors, each corresponding to a specific point in space and time. Instead of applying a single complex correction to the entire signal array, the system segments the correction into N correction factors for M points in time, where each correction factor operates independently on its corresponding signal portion. This segmentation reduces the computational complexity of determining correction factors while maintaining high signal accuracy across all spatial and temporal points.
Solution Approach 2:
The patent applies local quality by determining unique correction factors for each specific point in space and time rather than using a uniform correction approach. Each correction factor is tailored to the local environmental conditions at its corresponding point, allowing the system to address local variations in phase and amplitude distortions. This localised correction strategy improves overall signal accuracy without requiring a globally complex correction system.
2Manufacturing precision
If unique correction factors are determined for each point in space and time, then phase and amplitude variations are better corrected, but the computational load increases
Solution Approach 1:
The patent segments the determination of correction factors into independent calculations for each of the N points in space and M points in time. By dividing the computational task into separate, independent determination processes for each correction factor, the system achieves precise phase and amplitude correction at each point without requiring computationally intensive global optimization. This segmentation allows parallel processing and reduces the overall computational burden.
Solution Approach 2:
The patent applies partial action by determining correction factors iteratively and updating them based on received signals. Rather than calculating all correction factors simultaneously with excessive computational resources, the system determines initial correction factors, applies them to correct signals, then iteratively updates only the necessary correction factors based on the corrected signals. This iterative partial updating reduces computational load while maintaining high correction precision.
3Adaptability or versatility
If iterative updates of correction factors are performed, then adaptability to time-varying distortions is improved, but the processing time increases
Solution Approach 1:
The patent implements periodic action by performing iterative updates of correction factors at regular intervals based on received signals. The system determines correction factors, applies them to correct signals, then periodically updates the correction factors using the corrected signals from previous iterations. This periodic iterative process enables the system to adapt to time-varying environmental distortions while maintaining controlled processing time through structured, interval-based updates rather than continuous reprocessing.
Solution Approach 2:
The patent applies feedback by using the corrected signals from each iteration as input for determining updated correction factors in the next iteration. The system feeds back the corrected signal information to the correction factor determination process, allowing the correction factors to adapt to changing environmental conditions. This feedback mechanism improves adaptability to time-varying distortions while optimizing processing time by using the feedback information efficiently to update only the necessary correction parameters.
Data Source
AI summary
Methods and systems for correcting environmental distortion are disclosed. An example method can comprise receiving a first plurality of signals sampled in space at a first time and determining a first plurality of correction factors based on the first plurality of signals. The first plurality of correction factors can be configured to correct environmental distortion in the first plurality of signals. The first plurality of signals can be corrected by applying the first plurality of correction factors to the first plurality of signals thereby generating a corrected first plurality of signals. The corrected first plurality of signals can be provided. The method can be repeated for one or more additional pluralities of signals sampled in space at times subsequent to the first time with corresponding additional pluralities of correction factors. Each additional plurality of correction factors can be unique to a corresponding plurality of signals.