Summary
International Symposium on Nonlinear Theory and its Applications
2008
Session Number:A2L-D
Session:
Number:A2L-D2
Noise-assisted detection in distributed detection system with inhomogeneous signal levels
Shin Mizutani, Kenichi Arai, Peter Davis, Naoki Wakamiya, Masayuki Murata,
pp.-
Publication Date:2008/9/7
Online ISSN:2188-5079
Summary:
We analyzed distributed detection of a signal in a system where the signal level is different at each detector. As an example, we consider the case where the signal level is dependent on the distance of the detector from the source. Each detector separately compares the input with its threshold value, and the detection results from all detectors are combined using a K-out-of-N rule. Optimal detection requires adjusting the threshold of each detector to a value suitable for the signal level at that detector. In a suboptimal system consisting of detectors with identical detection thresholds, the detection performance may have a non-monotonic dependence on noise intensity, and performance can be improved by optimizing noise intensity.