NDLI: Detection Capacities of Distributed and Centralized Systems: A Comparative Study

Content Provider	IEEE Xplore Digital Library
Author	Yang, T.C.
Copyright Year	1976
Abstract	Distributed systems using many inexpensive sensors widely distributed over a large area present an alternative way for target detection and potential paradigm change in environmental sensing. The diversity of opportunities for detection by widely distributed sensors seems attractive, but how one compares the detection performance based on the observations made from many distributed sensors, each with small gain, with that from a centralized system with a high array gain has not been studied theoretically or experimentally. Treating the target-radiated signal as a communication signal, transmitting continuous Gaussian-distributed alphabets, the Shannon channel capacity yields the maximum information that the receivers can learn about the (target) transmitted signal. For this idea case, the channel capacity can then be used as a metric to compare the performance of various sensor systems. Matched track processing is introduced to motivate a capacity-based detector and the corresponding detection capacity. Based on that, it is found that the distributed systems can achieve, in principle, an area of coverage two to three times larger than that of a centralized system under the right conditions, and the area of coverage by the entire system can be significantly larger than the sum of detection areas of individual nodes for distributed systems.
Sponsorship	IEEE Oceanic Engineering Society
Starting Page	666
Ending Page	682
Page Count	17
File Size	2517162
File Format	PDF
ISSN	03649059
Volume Number	40
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sensor systems Receivers Signal to noise ratio Sensor arrays Optical noise information approach Centralized systems detection capacity distributed systems
Content Type	Text
Resource Type	Article
Subject	Ocean Engineering Mechanical Engineering Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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