Sensor scheduling in electronic support using Markov chains

Clarkson, I. V. L., El-Mahassni, E. D. and Howard, S. D. (2006) Sensor scheduling in electronic support using Markov chains. Iee Proceedings radar Sonar And Navigation, 153 4: 325-332. doi:10.1049/ip-rsn:20050055


Author Clarkson, I. V. L.
El-Mahassni, E. D.
Howard, S. D.
Title Sensor scheduling in electronic support using Markov chains
Journal name Iee Proceedings radar Sonar And Navigation   Check publisher's open access policy
ISSN 1350-2395
Publication date 2006
Sub-type Article (original research)
DOI 10.1049/ip-rsn:20050055
Volume 153
Issue 4
Start page 325
End page 332
Total pages 8
Place of publication Hertford
Publisher Institution Engineering Technology-IET
Collection year 2006
Language eng
Subject C1
280204 Signal Processing
610100 - Defence
0906 Electrical and Electronic Engineering
Abstract In electronic support, receivers must maintain surveillance over the very wide portion of the electromagnetic spectrum in which threat emitters operate. A common approach is to use a receiver with a relatively narrow bandwidth that sweeps its centre frequency over the threat bandwidth to search for emitters. The sequence and timing of changes in the centre frequency constitute a search strategy. The search can be expedited, if there is intelligence about the operational parameters of the emitters that are likely to be found. However, it can happen that the intelligence is deficient, untrustworthy or absent. In this case, what is the best search strategy to use? A random search strategy based on a continuous-time Markov chain (CTMC) is proposed. When the search is conducted for emitters with a periodic scan, it is shown that there is an optimal configuration for the CTMC. It is optimal in the sense that the expected time to intercept an emitter approaches linearity most quickly with respect to the emitter's scan period. A fast and smooth approach to linearity is important, as other strategies can exhibit considerable and abrupt variations in the intercept time as a function of scan period. In theory and numerical examples, the optimum CTMC strategy is compared with other strategies to demonstrate its superior properties.
Keyword Telecommunications
Mobility
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 09:13:13 EST