T. C. Yang
ABSTRACT
Distributed systems using many inexpensive sensors widely distributed over a large area presents an alternative way for target detection and potential paradigm change in environmental sensing. Treating the acoustic 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 signal. The channel capacity can then be used as a metric to compare the performance of various sensor systems in the ideal case. 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.
- Various authors, session on the design of distributed, surveillance and oceanographic monitoring systems, J. Acoust. Soc. Am. 122, 2997--2999 (2007).Google Scholar
- R. Viswanathan and P. K. Varshney, "Distributed detection with multiple sensors: Part I - Fundamentals," Proceedings of the IEEE, 85, 54--63 (1997).Google Scholar
Index Terms
- Potentials of distributed networked underwater sensing systems
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