Modeling and Design of a Distributed Detection System Based on Active Sonar Sensor Networks

Choi, Won-Yong; Kim, Song-Geun; Hong, Sun-Mog

doi:2011.14.1.123

J. KIMS Technol > Volume 14(1); 2011 > Article

Journal of the Korea Institute of Military Science and Technology 2011;14(1):123-131.
DOI: https://doi.org/10.9766/KIMST.2011.14.1.123

Modeling and Design of a Distributed Detection System Based on Active Sonar Sensor Networks

Won-Yong Choi, Song-Geun Kim, Sun-Mog Hong

능동 소나망 분산탐지 체계의 모델링 및 설계

최원용, 김송근, 홍순목

경북대학교 전자공학부

Abstract

In this paper, modeling and design of a distributed detection system are considered for an active sonar sensor network. The sensor network has a parallel configuration and it consists of a fusion center and a set of receiver nodes. A system with two receiver nodes is considered to investigate a theoretical aspect of design. To be specific, AND rule and OR rule are considered as the fusion rules of the sensor network. For the fusion rules, it is shown that a threshold rule of each sensor node has uniformly most powerful properties. Optimum threshold for each sensor is obtained that maximizes the probability of detection given probability of false alarm. Numerical experiments were also performed to investigate the detection characteristics of a distributed detection system with multiple sensor nodes. The experimental results show how signal strength, false alarm probability, and the distance between nodes in a sensor field affect the system detection performances.

Key Words: Distributed Detection, Active Sonar, Fusion Rule, Distributed Sensor Networks