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Compuationally Efficient Propagator Method for DoA with Coprime Array

서로소 배열에서 프로퍼게이터 방법 기반의 효율적인 도래각 추정 기법

Byun, Bu-Guen;Yoo, Do-Sik
변부근;유도식

  • Received : 2016.04.29
  • Accepted : 2016.06.13
  • Published : 2016.06.30

Abstract

In this paper, we propose a computationally efficient direction of arrival (DoA) estimation algorithm based on propagator method with non-uniform array. While the co-prime array techniques can improve the resolution of DoA, they generally lead to high computational complexity as the length of the coarray aperture. To reduce the complexity we use the propagator method that does not require singular value decomposition (SVD). Through simulations, we compare MUSIC with uniform lineary array, propagator method with uniform linear array, MUSIC with co-prime array, and the proposed scheme and observe that the performance of the proposed scheme is significantly better than MUSIC or propagator method with uniform linear array while it is slightly worse than computationally much more expensive co-prime array MUSIC scheme.

Keywords

Direction of arrival;Coprime array;Propagator method;Non-uniform array;Multiple signal classification

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Acknowledgement

Supported by : 한국연구재단