Radar Signal Processing Device for Selective Echo Classification
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Solution Overview
Problem
Conventional radar signal processing devices cannot perform flexible signal processing, such as selective gain control, echo stretch, echo trail generation, and scan-to-scan correlation, for various types of reception signals, leading to suppression of necessary signals along with unnecessary ones.
Innovation Solution
A signal processing device that includes a reception signal acquiring module, an identifying module to classify reception signals into types like land, ship, sea surface reflection, rain-and-snow clutter, and buoy, and a kind-based signal processing module to perform individual processing for each type, preventing interference between signal types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If gain control is applied to suppress unnecessary signals, then the signal level of unnecessary signals is reduced, but necessary signals may also be suppressed
Solution Approach 1:
The invention segments the reception signals into multiple categories (land echoes, ship echoes, sea surface reflections, rain-and-snow clutters) and applies different signal processing to each category. This allows selective suppression of unnecessary signals while preserving necessary ones, resolving the contradiction between reducing harmful factors and preventing information loss.
Solution Approach 2:
The invention applies different processing characteristics to different signal types locally. For example, land echoes may be suppressed with strong gain control while ship echoes are preserved with minimal processing. This localized approach to signal processing enables selective suppression without affecting necessary signals.
2Adaptability or versatility
If conventional signal processing is applied to all reception signals, then processing is simplified, but flexible processing for specific signal types is lost
Solution Approach 1:
The signal processing device is segmented into multiple processing paths, each dedicated to a specific signal type. This segmentation enables flexible processing for each signal category while maintaining a structured and organized system architecture that manages complexity through functional decomposition.
Solution Approach 2:
The invention creates a universal signal processing framework that can handle multiple signal types through a common structure. The processing device uses a unified approach of categorizing signals and applying type-specific processing, making the system adaptable to different signal conditions while maintaining structural consistency.
Data Source
AI summary
This disclosure provides a signal processing device, which includes a reception signal acquiring module for acquiring reception signals received by a radar antenna, an identifying module for identifying a kind of each reception signal, an extracting module for extracting the reception signal for each kind, and a kind-base signal processing module for performing individual signal processing for each kind of the extracted reception signal.