Dynamic Filter Chain Reconfiguration for Interference Suppression

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Solution Overview

Problem

Imaging systems face challenges in generating clear images of objects behind barriers due to interference from sources like wireless systems using ultrawideband signals, which degrade image quality.

Innovation Solution

An imaging system with a reconfigurable filter system that dynamically adapts by associating data blocks with processing step lists representing filter chains, allowing for selection and sequencing of filters to suppress interference based on the specific interference present.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed filter system is used in the imaging system, then the device complexity is reduced, but the adaptability to suppress different types of interference is insufficient

Engineering Contradiction:
Improveadaptability to suppress interferenceVSAvoidfilter system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The filter system is made dynamic by allowing real-time reconfiguration of filter chains. The processor can dynamically select different filters and adjust their ordering based on the detected interference type, transforming a static system into an adaptive one that responds to changing interference conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The filter system is segmented into multiple independent filters that can be selectively combined in different sequences. Each filter targets specific interference characteristics, and the system can segment the filtering process into discrete, manageable stages that can be independently configured.

Inventive Principle:
Principle #1Segmentation

2Reliability

If multiple filters are used in sequence to suppress interference, then the interference suppression capability is improved, but the processing time increases

Engineering Contradiction:
Improveinterference suppression capabilityVSAvoidsignal processing time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system applies partial filtering action by selecting only the necessary number and type of filters based on the detected interference. Rather than always applying maximum filtering, the system uses excessive action only when needed, adjusting the filter chain length and composition to match the actual interference level and type.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The system performs preliminary detection of interference characteristics before applying filters. By analyzing the interference type and strength in advance, the system can pre-determine the optimal filter chain configuration, avoiding unnecessary filtering steps and reducing overall processing time.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the filter order is fixed, then the device complexity is reduced, but the effectiveness of interference suppression varies for different interference types

Engineering Contradiction:
Improveinterference suppression effectivenessVSAvoidfilter chain configuration complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The filter chain configuration is made dynamic through processor control. The system can reorder filters and adjust the chain composition based on real-time interference detection, allowing the most effective filter ordering for each specific interference type to be automatically selected.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system incorporates feedback mechanisms where the processor monitors the effectiveness of filter chains and adjusts the configuration based on results. This feedback loop enables continuous optimization of filter ordering to maximize suppression effectiveness for different interference types.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS8798385B2Suppressing interference in imaging systems
Publication Date: 2014.08.05 RAYTHEON CO
  • US8798385B2 patent drawing
  • US8798385B2 patent drawing
  • US8798385B2 patent drawing

AI summary

According to one embodiment, an imaging system includes an interface, a plurality of filters, and a processor. The interface receives data blocks. The processor associates each data block with a processing step list that represents a filter chain that has at least a subset of the filters coupled in sequence. The processor filters each data block according to the filter chain represented by the associated processing step list.