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https://hdl.handle.net/20.500.11851/6476
Title: | Data-driven cepstral and neural learning of features for robust micro-Doppler classification | Authors: | Erol, Barış Seyfioğlu, Mehmet Saygın Gürbüz, Sevgi Zübeyde Amin, Moeness |
Keywords: | [No Keywords] | Publisher: | Spie-Int Soc Optical Engineering | Source: | Conference on Radar Sensor Technology XXII -- APR 16-18, 2018 -- Orlando, FL | Series/Report no.: | Proceedings of SPIE | Abstract: | Automatic target recognition (ATR) using micro-Doppler analysis is a technique that has been a topic of great research over the past decade, with key applications to border control and security, perimeter defense, and force protection. Patterns in the movements of animals, humans, and drones can all be accomplished through classification of the target's micro-Doppler signature. Typically, classification is based on a set of fixed, pre-defined features extracted from the signature; however, such features can perform poorly under low signal-to-noise ratio (SNR), or when the number and similarity of classes increases. This paper proposes a novel set of data-driven frequency-warped cepstral coefficients (FWCC) for classification of micro-Doppler signatures, and compares performance with that attained from the data-driven features learned in deep neural networks (DNNs). FWCC features are computed by first filtering the discrete Fourier Transform (DFT) of the input signal using a frequency-warped filter bank, and then computing the discrete cosine transform (DCT) of the logarithm. The filter bank is optimized for radar using genetic algorithms (GA) to adjust the spacing, weight, and width of individual filters. For a 11-class case of human activity recognition, it is shown that the proposed data-driven FWCC features yield similar classification accuracy to that of DNNs, and thus provides interesting insights on the benefits of learned features. | URI: | https://doi.org/10.1117/12.2304396 https://hdl.handle.net/20.500.11851/6476 |
ISBN: | 978-1-5106-1778-0 | ISSN: | 0277-786X 1996-756X |
Appears in Collections: | Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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