Ensemble-Empirical-Mode-Decomposition based micro-Doppler signal separation and classification

Chen, H.; Lin, P.; Emrith, Khemraj; Narayan, Pritesh P; Yao, Yufeng

Abstract

The target echo signals obtained by Synthetic Aperture Radar (SAR) and Ground Moving Target Indicator (GMTI platforms are mainly composed of two parts, the micro-Doppler signal and the target body part signal. The wheeled vehicle and the track vehicle are classified according to the different character of their micro-Doppler signal. In order to overcome the mode mixing problem in Empirical Mode Decomposition (EMD), Ensemble Empirical Mode Decomposition (EEMD) is employed to decompose the original signal into a number of Intrinsic Mode Functions (IMF). The correlation analysis is then carried out to select IMFs which have a relatively high correlation with the micro-Doppler signal. Thereafter, four discriminative features are extracted and Support Vector Machine (SVM) classifier is applied for classification. The experimental results show that the features extracted after EEMD decomposition are effective, with up 90% success rate for classification using one feature. In addition, these four features are complementary in different target velocity and azimuth angles.

• Journal Article Type: Article
• Acceptance Date: Jan 10, 2017
• Online Publication Date: Dec 26, 2017
• Publication Date: Nov 24, 2017
• Deposit Date: Apr 24, 2017
• Publicly Available Date: Jun 26, 2018
• Journal: International Journal of Computer Applications in Technology
• Print ISSN: 0952-8091
• Publisher: Inderscience
• Peer Reviewed: Peer Reviewed
• Volume: 56
• Issue: 4
• Pages: 253-263
• DOI: https://doi.org/10.1504/IJCAT.2017.10009946
• Keywords: micro-Doppler, micro-motion, EEMD, IMF, wheeled/tracked vehicle, SAR/GMTI, signal separation, feature abstraction, vehicle classification, SVM
• Public URL: https://uwe-repository.worktribe.com/output/878180
• Publisher URL: http://dx.doi.org/10.1504/IJCAT.2017.10009946
• Contract Date: Apr 24, 2017