Bi-level JOMP for DOA estimation in coprime array with off-grid targets
نویسندگان
چکیده
منابع مشابه
Underdetermined Wideband DOA Estimation for Off-Grid Sources with Coprime Array Using Sparse Bayesian Learning
Sparse Bayesian learning (SBL) is applied to the coprime array for underdetermined wideband direction of arrival (DOA) estimation. Using the augmented covariance matrix, the coprime array can achieve a higher number of degrees of freedom (DOFs) to resolve more sources than the number of physical sensors. The sparse-based DOA estimation can deteriorate the detection and estimation performance be...
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Coprime array, which utilizes a coprime pair of uniform linear subarrays, is an attractive structure to achieve sparse array configurations. Alternatively, effective coprime array configurations can be implemented using a uniform linear array with two coprime sensing frequencies. This enables the integration of the coprime array and filter concepts to achieve high capabilities in meeting system...
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Xiangrong Wang received both the Bachelor and Master degrees in electrical engineering from Nanjing University of Science and Technology, China, in 2009 and 2011, respectively. She is working toward the Ph.D. degree in electrical engineering in University of New South Wales, Sydney, Australia. She is currently a visiting research student in the Center for Advanced Communications, Villanova Univ...
متن کاملUnderdetermined wideband DOA estimation of off-grid sources employing the difference co-array concept
A wideband off-grid model is proposed to represent dictionary mismatch under the compressive sensing framework exploiting difference co-arrays. A group sparsity based off-grid method is proposed for underdetermined wideband direction of arrival (DOA) estimation which provides improved performance over the existing group sparsity based method with a same search grid. A two-step approach is then ...
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In this paper, we propose a fast search-free method for direction-of-arrival (DOA) estimation with coprime arrays. A coprime array consists of two uniform linear subarrays with inter-element spacings Mλ/2 and Nλ/2, where M and N are coprime integers and λ is the wavelength of the signal. Because uniform linear arrays enjoy many processing advantages over arbitrary geometry arrays, our strategy ...
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ژورنال
عنوان ژورنال: The Journal of Engineering
سال: 2019
ISSN: 2051-3305
DOI: 10.1049/joe.2019.0663