A Novel Micro-Doppler Coherence Loss for Deep Learning Radar Applications

Deep learning techniques are subject to increasing adoption for a wide range of micro-Doppler applications, where predictions need to be made based on time-frequency signal representations. Most, if not all, of the reported applications focus on translating an existing deep learning framework to thi...

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Bibliographic Details
Published in:	arXiv.org
Main Authors:	Czerkawski, Mikolaj, Ilioudis, Christos, Clemente, Carmine, Michie, Craig, Andonovic, Ivan, Tachtatzis, Christos
Format:	Paper
Language:	English
Published:	Ithaca Cornell University Library, arXiv.org 12.04.2024
Subjects:	Coherence Deep learning
ISSN:	2331-8422
Online Access:	Get full text
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Summary:	Deep learning techniques are subject to increasing adoption for a wide range of micro-Doppler applications, where predictions need to be made based on time-frequency signal representations. Most, if not all, of the reported applications focus on translating an existing deep learning framework to this new domain with no adjustment made to the objective function. This practice results in a missed opportunity to encourage the model to prioritize features that are particularly relevant for micro-Doppler applications. Thus the paper introduces a micro-Doppler coherence loss, minimized when the normalized power of micro-Doppler oscillatory components between input and output is matched. The experiments conducted on real data show that the application of the introduced loss results in models more resilient to noise.
Bibliography:	SourceType-Working Papers-1 ObjectType-Working Paper/Pre-Print-1 content type line 50
ISSN:	2331-8422
DOI:	10.48550/arxiv.2404.15346