CFAR data fusion center with inhomogeneous receivers

Detection systems with distributed sensors and data fusion are increasingly used by surveillance systems. A system formed by N inhomogeneous constant false alarm rate (CFAR) detectors (cell-averaging (CA) and ordered statistic (OS) CFAR detectors) is studied. A recursive formulation of an algorithm...

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Bibliographic Details
Published in:	IEEE transactions on aerospace and electronic systems Vol. 28; no. 1; pp. 276 - 285
Main Authors:	Elias-Fuste, A.R., Broquetas-Ibars, A., Antequera, J.P., Yuste, J.C.M.
Format:	Journal Article Publication
Language:	English
Published:	New York, NY IEEE 01-01-1992 Institute of Electrical and Electronics Engineers
Subjects:	Applied sciences Communication channels Communication system control Detection, estimation, filtering, equalization, prediction Detectors Enginyeria de la telecomunicació Event detection Exact sciences and technology Inference algorithms Information, signal and communications theory Interference Interferències Joining processes Page description languages Probabilitats Probabilities Probability Radar Radar detection Radar interference Radar receivers Radar theory Radiocomunicació i exploració electromagnètica Signal and communications theory Signal, noise Statistical distributions Surveillance Telecommunications and information theory Àrees temàtiques de la UPC Theoretical study Receiver Error probability Performance Algorithm Performance characteristic
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Summary:	Detection systems with distributed sensors and data fusion are increasingly used by surveillance systems. A system formed by N inhomogeneous constant false alarm rate (CFAR) detectors (cell-averaging (CA) and ordered statistic (OS) CFAR detectors) is studied. A recursive formulation of an algorithm that permits a fixed level of false alarms in the data fusion center is presented, to set the optimum individual threshold levels in the CFAR receivers and the optimum 'K out of N' decision rule in order to maximize the total probability of detection. The algorithm also considers receivers of different quality or with different communication channel qualities connecting them with the fusion center. This procedure has been applied to several hypothetical networks with distributed CA-CFAR and OS-CFAR receivers and for Rayleigh targets and interference, and it was seen that in general the fusion decision OR rule is not always the best.< >
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0018-9251 1557-9603
DOI:	10.1109/7.135453