Sparsity-Based Two-Dimensional DOA Estimation for Coprime Array: From Sum–Difference Coarray Viewpoint

@article{Shi2017SparsityBasedTD,
  title={Sparsity-Based Two-Dimensional DOA Estimation for Coprime Array: From Sum–Difference Coarray Viewpoint},
  author={Junpeng Shi and Guoping Hu and Xiaofei Zhang and Fenggang Sun and Hao Zhou},
  journal={IEEE Transactions on Signal Processing},
  year={2017},
  volume={65},
  pages={5591-5604}
}
This paper addresses the issue of two-dimensional (2-D) direction of arrival (DOA) estimation with coprime planar arrays (CPPAs) via sparse representation. Our work differs from the partial spectral search approach [25], which suppresses the phase ambiguity by searching the common peaks of two subarrays. We focus on the coprime property of CPPA, where the sparse array extension model with sum–difference coarray (SDCA) is derived for larger degrees of freedom (DOFs). Besides, to optimize the… CONTINUE READING

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