Two-Snapshot DOA Estimation Via Hankel-Structured Matrix Completion
Mohammad Bokaei, Saeed Razavikia, Arash Amini, Stefano Rini
Abstract
In this paper, we study the problem of estimating the direction of arrival (DOA) using a sparsely sampled uniform linear array (ULA). Based on an initial incomplete ULA measurements, our strategy is to choose a sparse subset of array elements for measuring the next snapshot. Then, we use a Hankel-structured matrix completion to interpolate for the missing ULA measurements. Finally, the source DOAs are estimated using a subspace method such as Prony on the fully recovered ULA. We theoretically provide a sufficient bound for the number of required samples (array elements) for perfect recovery. The numerical comparisons of the proposed method with existing techniques such as atomic-norm minimization and off-the-grid approaches confirm the superiority of the proposed method.
BibTeX
@inproceedings{icassp2022_twosnapshotdoaes,
title = {Two-Snapshot DOA Estimation Via Hankel-Structured Matrix Completion},
author = {Mohammad Bokaei and Saeed Razavikia and Arash Amini and Stefano Rini},
booktitle = {ICASSP 2022},
year = {2022}
}