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Volume 32 Issue 10
Dec.  2010
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Liu Zhao-Ting, He Jin, Liu Zhong. Extended Aperture-based DOA Estimation of Coherent Sources Using a Electromagnetic Vector-sensor Array[J]. Journal of Electronics & Information Technology, 2010, 32(10): 2511-2515. doi: 10.3724/SP.J.1146.2009.01377
Citation: Liu Zhao-Ting, He Jin, Liu Zhong. Extended Aperture-based DOA Estimation of Coherent Sources Using a Electromagnetic Vector-sensor Array[J]. Journal of Electronics & Information Technology, 2010, 32(10): 2511-2515. doi: 10.3724/SP.J.1146.2009.01377

Extended Aperture-based DOA Estimation of Coherent Sources Using a Electromagnetic Vector-sensor Array

doi: 10.3724/SP.J.1146.2009.01377
  • Received Date: 2009-10-26
  • Rev Recd Date: 2010-04-13
  • Publish Date: 2010-10-19
  • An efficient algorithm for multiple coherent sources two-dimensional Direction Of Arrival (DOA) estimation with a sparse uniform rectangular array of electromagnetic vector sensor (EmVS) is proposed. The algorithm can improve the DOA estimation performance by increasing the intervector sensor spacing to achieve aperture extension. The Polarization Smoothing Algorithm (PSA) is coupled with the propagator method (PM) to acquire cyclically ambiguous DOA estimates. In order to disambiguate the cyclic phase ambiguities, a novel pre-processing method is derived by Covariance Matrix Averaging (CMA) and identify the true DOA estimates from a set of cyclically ambiguous candidate estimates based on the vector sensor steering vectors characteristics. Comparing with the existing extended aperture-based direction finding method, the proposed algorithm can estimate the DOA of coherent sources, and requires no eigen-decomposition, hence, has a lower computational complexity. Monte-Carlo simulations are presented to verify the effectiveness of the proposed algorithm.
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