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Mode space smoothing algorithm to estimate DOA of coherent signals impinging on uniform circular array

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Journal of Electronics (China)

Abstract

A novel method to estimate DOA of coherent signals impinging on a uniform circular array(UCA) is presented in this paper. A virtual uniform linear array (VULA) is first derived by using spatial DFT technique, transforming the UCA from element space to phase mode space to obtain the properties of ordinary ULA, and then the well known spatial smoothing technique is applied to the VULA so that the lost rank of covariance matrix due to signal coherence can be retrieved. This method makes it feasible to use the simple MUSIC algorithm to estimate DOA of coherent signals impinging on a UCA without heavy computation burden. Simulation results strongly verify the effectiveness of the algorithm.

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Authors and Affiliations

  1. Department of Electronic Engineering, Tsinghua University, 100084, Beijing

    Ma Changlin, Peng Yingning, Tian Lisheng & Liu Jianhua

Authors
  1. Ma Changlin
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  2. Peng Yingning
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  3. Tian Lisheng
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  4. Liu Jianhua
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Ma, C., Peng, Y., Tian, L. et al. Mode space smoothing algorithm to estimate DOA of coherent signals impinging on uniform circular array. J. of Electron.(China) 15, 289–295 (1998). https://doi.org/10.1007/s11767-998-0001-3

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  • DOI: https://doi.org/10.1007/s11767-998-0001-3

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