Enhanced Radar Signal Classification Using AMP and Visibility Graph for Multi-Signal Environments

Accurately classifying and deinterleaving overlapping radar signals presents a significant challenge in complex environments, such as electronic warfare. Traditional methods, such as spectrogram-based analysis, often struggle to differentiate radar signals with similar scan patterns, particularly un...

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Main Authors: Ji-Hyeon Kim, Soon-Young Kwon, Hyoung-Nam Kim
Format: Article
Language:English
Published: MDPI AG 2024-11-01
Series:Sensors
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Online Access:https://www.mdpi.com/1424-8220/24/23/7612
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author Ji-Hyeon Kim
Soon-Young Kwon
Hyoung-Nam Kim
author_facet Ji-Hyeon Kim
Soon-Young Kwon
Hyoung-Nam Kim
author_sort Ji-Hyeon Kim
collection DOAJ
description Accurately classifying and deinterleaving overlapping radar signals presents a significant challenge in complex environments, such as electronic warfare. Traditional methods, such as spectrogram-based analysis, often struggle to differentiate radar signals with similar scan patterns, particularly under low signal-to-noise ratio (SNR) conditions. To address these limitations, we propose a novel two-stage classification framework that combines amplitude pattern (AMP) analysis and visibility graphs to enhance the accuracy and efficiency of radar signal classification. In the first stage, AMP analysis groups radar reception signals into broad categories, which reduces noise and isolates signal features. In the second stage, a visibility graph technique is applied to refine these classifications, enabling the practical separation of radar signals with overlapping or similar amplitude features. The proposed method is particularly effective in handling complex scans, such as the Palmer series, which blends search and tracking patterns. Deep learning models, including GoogLeNet and ResNet, are integrated within this framework to improve classification performance further, demonstrating robustness in low-SNR and multi-signal environments. This approach offers significant improvements over conventional methods, providing enhanced performance in differentiating radar signals across various scanning patterns in challenging multi-signal environments.
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spelling doaj-art-932d7d4985dc4a8e94cca50fdec80edd2025-08-20T01:55:45ZengMDPI AGSensors1424-82202024-11-012423761210.3390/s24237612Enhanced Radar Signal Classification Using AMP and Visibility Graph for Multi-Signal EnvironmentsJi-Hyeon Kim0Soon-Young Kwon1Hyoung-Nam Kim2Department of Electrical and Electronics Engineering, Pusan National University, Busan 46241, Republic of KoreaDepartment of Electrical and Electronics Engineering, Pusan National University, Busan 46241, Republic of KoreaDepartment of Electrical and Electronics Engineering, Pusan National University, Busan 46241, Republic of KoreaAccurately classifying and deinterleaving overlapping radar signals presents a significant challenge in complex environments, such as electronic warfare. Traditional methods, such as spectrogram-based analysis, often struggle to differentiate radar signals with similar scan patterns, particularly under low signal-to-noise ratio (SNR) conditions. To address these limitations, we propose a novel two-stage classification framework that combines amplitude pattern (AMP) analysis and visibility graphs to enhance the accuracy and efficiency of radar signal classification. In the first stage, AMP analysis groups radar reception signals into broad categories, which reduces noise and isolates signal features. In the second stage, a visibility graph technique is applied to refine these classifications, enabling the practical separation of radar signals with overlapping or similar amplitude features. The proposed method is particularly effective in handling complex scans, such as the Palmer series, which blends search and tracking patterns. Deep learning models, including GoogLeNet and ResNet, are integrated within this framework to improve classification performance further, demonstrating robustness in low-SNR and multi-signal environments. This approach offers significant improvements over conventional methods, providing enhanced performance in differentiating radar signals across various scanning patterns in challenging multi-signal environments.https://www.mdpi.com/1424-8220/24/23/7612radar scan pattern classificationamplitude patternvisibility graph
spellingShingle Ji-Hyeon Kim
Soon-Young Kwon
Hyoung-Nam Kim
Enhanced Radar Signal Classification Using AMP and Visibility Graph for Multi-Signal Environments
Sensors
radar scan pattern classification
amplitude pattern
visibility graph
title Enhanced Radar Signal Classification Using AMP and Visibility Graph for Multi-Signal Environments
title_full Enhanced Radar Signal Classification Using AMP and Visibility Graph for Multi-Signal Environments
title_fullStr Enhanced Radar Signal Classification Using AMP and Visibility Graph for Multi-Signal Environments
title_full_unstemmed Enhanced Radar Signal Classification Using AMP and Visibility Graph for Multi-Signal Environments
title_short Enhanced Radar Signal Classification Using AMP and Visibility Graph for Multi-Signal Environments
title_sort enhanced radar signal classification using amp and visibility graph for multi signal environments
topic radar scan pattern classification
amplitude pattern
visibility graph
url https://www.mdpi.com/1424-8220/24/23/7612
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AT soonyoungkwon enhancedradarsignalclassificationusingampandvisibilitygraphformultisignalenvironments
AT hyoungnamkim enhancedradarsignalclassificationusingampandvisibilitygraphformultisignalenvironments