title: Design of an Acoustic Target Intrusion Detection System Based on Small-Aperture Microphone Array.
abstract: Automated surveillance of remote locations in a wireless sensor network is dominated by the detection algorithm because actual intrusions in such locations are a rare event. Therefore, a detection method with low power consumption is crucial for persistent surveillance to ensure longevity of the sensor networks. A simple and effective two-stage algorithm composed of energy detector (ED) and delay detector (DD) with all its operations in time-domain using small-aperture microphone array (SAMA) is proposed. The algorithm analyzes the quite different velocities between wind noise and sound waves to improve the detection capability of ED in the surveillance area. Experiments in four different fields with three types of vehicles show that the algorithm is robust to wind noise and the probability of detection and false alarm are 96.67% and 2.857%, respectively.
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 201800, China. zuxs@mail.sim.ac.cn.|University of Chinese Academy of Sciences, Beijing 100049, China. zuxs@mail.sim.ac.cn.
authors.forename: Xingshui
authors.initials: X
authors.lastname: Zu
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 201800, China. GuoFeng@mail.sim.ac.cn.|University of Chinese Academy of Sciences, Beijing 100049, China. GuoFeng@mail.sim.ac.cn.
authors.forename: Feng
authors.initials: F
authors.lastname: Guo
authors.affiliation: IBM-Research China Lab, Shanghai 201203, China. jchhuang@mail.ustc.edu.cn.
authors.forename: Jingchang
authors.initials: J
authors.lastname: Huang
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 201800, China. qinzhao21@mail.sim.ac.cn.|University of Chinese Academy of Sciences, Beijing 100049, China. qinzhao21@mail.sim.ac.cn.
authors.forename: Qin
authors.initials: Q
authors.lastname: Zhao
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 201800, China. liuhw@mail.ustc.edu.cn.
authors.forename: Huawei
authors.initials: H
authors.lastname: Liu
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 201800, China. sinoiot@mail.sim.ac.cn.
authors.forename: Baoqing
authors.initials: B
authors.lastname: Li
authors.affiliation: Science and Technology on Microsystem Laboratory, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 201800, China. sinowsn@mail.sim.ac.cn.
authors.forename: Xiaobing
authors.initials: X
authors.lastname: Yuan
keywords: WSN; intrusion detection; small-aperture microphone array; time delay estimation; wind noise