Work

Alias-Free Arrays

Year: 2022

Type: article

Abstract: Nonuniform array geometries provide freedom for increased aperture and reduced mutual coupling. A necessary and sufficient condition is given for an array of isotropic sensor elements to be unambiguous for any specified set of directions of arrival. The set of unambiguous spatial frequencies is shown to be a parallelepiped, admitting simple geometrical interpretation. Results are used in design of linear, planar, and 3D arrays.

Source: IEEE Signal Processing Letters

DOI: 10.1109/lsp.2022.3224834

Authors: David Tucker, Shen Zhao, Rizwan Ahmad, Lee C. Potter

Institutions: The Ohio State University, Stanford Medicine, Stanford University

Language: English

Topic: Direction-of-Arrival Estimation Techniques

Subfield: Signal Processing

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: National Heart, Lung, and Blood Institute, Air Force Research Laboratory

Awards: G2807525591, A New Paradigm for Rapid, Accurate Cardiac Magnetic Resonance Imaging, A comprehensive valvular heart disease assessment with stress cardiac MRI