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http://dx.doi.org/10.7840/kics.2014.39C.1.60

Footstep Detection in Noisy Environment via Non-Linear Spectral Subtraction and Cross-Correlation  

Kim, Tae-Bok (LIG넥스원 PGM 연구센터/고려대학교 영상정보처리학과 지능신호처리 연구실)
Ko, Hanseok (고려대학교 영상정보처리학과 지능신호처리 연구실)
Abstract
Footstep detection using seismic sensors for security is a very meaningful task, but readings can easily fluctuate due to noise in outdoor environment. We propose NSSC method based on nonlinear spectral subtraction and cross-correlation using prime footstep model signal as a footstep signal refining process that enhances the signal-to-noise ratio (SNR) and attenuates noise. After de-noising, a detection event classification method is presented as further refining process to ensure that the detection result is a footstep. To validate the proposed algorithm, representative experiments including sunny and rainy-day cases are demonstrated.
Keywords
Seismic; Footstep; Nonlinear Sepctral Subtraction; Correlation; Detection; Classification;
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Times Cited By KSCI : 1  (Citation Analysis)
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