A copula-based semi-parametric approach for footstep detection using seismic sensor networks
Ashok Sundaresan, Arun Subramanian, Pramod K. Varshney, Thyagaraju Damarla · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2010
In this paper, we consider the problem of detecting the presence of footsteps using signal measurements from a network of seismic sensors. Since the sensors are closely spaced, they result in correlated measurements. A novel method for detection that exploits the spatial dependence of sensor measurements using copula functions is proposed. An approach for selecting the copula function that is most suited for modeling the spatial dependence of sensor observations is also provided. The performance of the proposed approach is illustrated using real footstep signals collected using an experimental test-bed consisting of seismic sensors.