15 February 2016 New direction of arrival estimation of coherent signals based on reconstructing matrix under unknown mutual coupling
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Abstract
A direction of arrival (DOA) estimation algorithm for coherent signals in the presence of unknown mutual coupling is proposed. A group of auxiliary sensors in a uniform linear array are applied to eliminate the effects on the orthogonality of subspaces brought by mutual coupling. Then, a Toeplitz matrix, whose rank is independent of the coherency between impinging signals, is reconstructed to eliminate the rank loss of the spatial covariance matrix. Therefore, the signal and noise subspaces can be estimated properly. This method can estimate the DOAs of coherent signals under unknown mutual coupling accurately without any iteration and calibration sources. It has a low computational burden and high accuracy. Simulation results demonstrate the effectiveness of the algorithm.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Rui Guo, Rui Guo, Weixing Li, Weixing Li, Yue Zhang, Yue Zhang, Zengping Chen, Zengping Chen, } "New direction of arrival estimation of coherent signals based on reconstructing matrix under unknown mutual coupling," Journal of Applied Remote Sensing 10(1), 015013 (15 February 2016). https://doi.org/10.1117/1.JRS.10.015013 . Submission:
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