no code implementations • 2 Feb 2024 • Silin Gao, Wenlong Wang, Muhan Wang, Zhe Zhang, Zai Yang, Xiaolan Qiu, Bingchen Zhang, Yirong Wu
This paper presents an innovative gridless 3-D imaging framework tailored for UAV-borne TomoSAR.
no code implementations • 15 Jul 2023 • Xunmeng Wu, Zai Yang, Zhiqiang Wei, Zongben Xu
This paper addresses the problem of direction-of-arrival (DOA) estimation for constant modulus (CM) source signals using a uniform or sparse linear array.
no code implementations • 15 Jul 2023 • Xunmeng Wu, Zai Yang, Zongben Xu
We propose a universal signal-domain approach to solve the optimization problems by embedding the noiseless multichannel signal of interest into a series of low-rank positive-semidefinite block matrices of Hankel and Toeplitz submatrices and formulating the original parameter-domain optimization problems as equivalent structured matrix recovery problems.
no code implementations • 22 Feb 2023 • Zai Yang, Kaijie Wang
Direction augmentation (DA) and spatial smoothing (SS), followed by a subspace method such as ESPRIT or MUSIC, are two simple and successful approaches that enable localization of more uncorrelated sources than sensors with a proper sparse array.
no code implementations • 28 Nov 2022 • Zai Yang, Yi-Lin Mo, Gongguo Tang, Zongben Xu
Atomic norm methods have recently been proposed for spectral super-resolution with flexibility in dealing with missing data and miscellaneous noises.
no code implementations • 25 Mar 2022 • Zai Yang, Xinyao Chen, Xunmeng Wu
A recent trend of research on direction-of-arrival (DOA) estimation is to localize more uncorrelated sources than sensors by using a proper sparse linear array (SLA) and the Toeplitz covariance structure, at a cost of robustness to source correlations.
no code implementations • 10 Jan 2022 • Zai Yang
In this paper, we analyze the nonasymptotic performance of ESPRIT and spatial-smoothing ESPRIT with finitely many snapshots and finite SNR.
no code implementations • 21 Jan 2021 • Xunmeng Wu, Zai Yang, Zongben Xu
This paper investigates the recovery of a spectrally sparse signal from its partially revealed noisy entries within the framework of spectral compressive sensing.
Compressive Sensing Matrix Completion Information Theory Information Theory
no code implementations • 9 Jul 2014 • Zai Yang, Lihua Xie
This paper is concerned about sparse, continuous frequency estimation in line spectral estimation, and focused on developing gridless sparse methods which overcome grid mismatches and correspond to limiting scenarios of existing grid-based approaches, e. g., $\ell_1$ optimization and SPICE, with an infinitely dense grid.