Dynamically Reconfigurable Channelizer for Pop-Up Object Detection
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Solution Overview
Problem
Conventional channelizer circuits are static and unable to adapt to dynamic radio frequency environments, leading to missed detections of objects that can temporarily change frequencies or be detectable only for short periods, known as 'pop-up' or 'pulse' objects.
Innovation Solution
A fully configurable and dynamic channelizer architecture that adjusts parameters such as channel widths, center frequencies, and number of channels in real-time or on a pulse-to-pulse basis, using polyphase filter banks, varying decimation regimes, FFT configurations, and an intensive switching fabric to establish an arbitrary frequency plan and improve signal-to-noise ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional static channelizer circuits are used, then device complexity is reduced and ease of manufacture is improved, but adaptability to dynamic RF environments deteriorates and detection reliability of pop-up objects worsens
Solution Approach 1:
The patent implements dynamic reconfiguration of channelizer parameters including center frequencies, channel widths, and number of channels based on detected signal characteristics. The system continuously adapts its architecture to track frequency-hopping threats and capture pop-up objects, transforming a static circuit into a dynamically adjustable detection system that responds to changing RF conditions in real-time
Solution Approach 2:
The invention changes key operational parameters of the channelizer including center frequency positions, channel bandwidth widths, and the number of active channels. These parameter modifications are performed dynamically based on signal analysis, allowing the system to optimize detection sensitivity and adaptability without requiring complete hardware redesign, thereby managing complexity while improving versatility
2Measurement precision
If static channel definitions at compile time are used, then manufacturing precision is improved and ease of manufacture is enhanced, but detection precision of frequency-hopping objects deteriorates
Solution Approach 1:
The system performs preliminary analysis of the RF spectrum to identify potential frequency-hopping patterns and pop-up object characteristics before final detection. By pre-configuring multiple channel sets and preparing reconfiguration strategies in advance, the system reduces response time when dynamic threats appear, eliminating the delay associated with static compile-time definitions
3Reliability
If conventional receiver architectures are used, then device complexity is reduced, but detection reliability of pop-up objects deteriorates due to inability to capture short-duration signals
Solution Approach 1:
The patent implements a feedback mechanism where detection results from output signal analysis are fed back to dynamically adjust channelizer parameters. When pop-up objects or frequency-hopping threats are detected, the system uses this feedback information to rapidly reconfigure channels for continued tracking, creating a closed-loop detection system that improves reliability through continuous adaptation rather than static configuration
Data Source
AI summary
Embodiments are directed to a channelizer architecture configured to provide fully configurable frequency spectrum shaping by: establishing a plurality of parameters of the architecture, receiving an input signal, processing, by the architecture, the input signal in accordance with the plurality of parameters to obtain an output signal, analyzing the output signal to detect an object, and modifying the plurality of parameters to account for at least one dynamic condition associated with the object.