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Sensors 2013, 13(1), 848-864; doi:10.3390/s130100848
Article

Hybrid Radar Emitter Recognition Based on Rough k-Means Classifier and Relevance Vector Machine

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Received: 17 September 2012 / Revised: 11 December 2012 / Accepted: 27 December 2012 / Published: 11 January 2013
(This article belongs to the Section Physical Sensors)
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Abstract

Due to the increasing complexity of electromagnetic signals, there exists a significant challenge for recognizing radar emitter signals. In this paper, a hybrid recognition approach is presented that classifies radar emitter signals by exploiting the different separability of samples. The proposed approach comprises two steps, namely the primary signal recognition and the advanced signal recognition. In the former step, a novel rough k-means classifier, which comprises three regions, i.e., certain area, rough area and uncertain area, is proposed to cluster the samples of radar emitter signals. In the latter step, the samples within the rough boundary are used to train the relevance vector machine (RVM). Then RVM is used to recognize the samples in the uncertain area; therefore, the classification accuracy is improved. Simulation results show that, for recognizing radar emitter signals, the proposed hybrid recognition approach is more accurate, and presents lower computational complexity than traditional approaches.
Keywords: hybrid recognition; rough boundary; uncertain boundary; computational complexity hybrid recognition; rough boundary; uncertain boundary; computational complexity
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Yang, Z.; Wu, Z.; Yin, Z.; Quan, T.; Sun, H. Hybrid Radar Emitter Recognition Based on Rough k-Means Classifier and Relevance Vector Machine. Sensors 2013, 13, 848-864.

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