Distributed detection in a large wireless sensor network

A distributed detection and decision fusion scheme is proposed for a wireless sensor network (WSN) consisting of a large number of sensors. At the fusion center, the total number of detections reported by local sensors are employed for hypothesis testing. Based on the assumption that the received signal power decays as the distance from the target increases, system level detection performance measures, namely probabilities of detection and false alarm, are derived analytically through approximation by using the central limit theorem (CLT). If the number of sensors is sufficiently large, the proposed fusion rule can provide very good system level detection performance, in the absence of the knowledge of local sensors

• Type: Journal
• Year: 2006
• Where: INFFUS
• Authors: Ruixin Niu, Pramod K. Varshney, Qi Cheng
• Keywords: INFFUS 2006, Level Detection Performance, Local Sensor, Sensor