Results 11 to 20 of about 2,109,467 (140)
Sparse Array Beamforming Design for Wideband Signal Models [PDF]
, 2020 We develop sparse array receive beamformer design methods achieving maximum signal-to-interference plus noise ratio (MaxSINR) for wideband sources and jammers. Both tapped delay line (TDL) filtering and the DFT realizations to wideband array processing are considered.
arxiv +1 more source
A High Resolution Optimum 2D Coprime Planar Array [PDF]
arXiv, 2022 Designing a new class of rectangular two-dimensional sparse array to enhance the signal resolving capabilities with a limited number of sensors has always been a challenge. We explore the non-uniformity of the sparse arrays to enhance the Degrees of Freedom (DOF) by considering the under-determined cases using the concept of the virtual array.
arxiv
Sparse Symmetric Linear Arrays with Low Redundancy and a Contiguous Sum Co-Array [PDF]
, 2020 Sparse arrays can resolve significantly more scatterers or sources than sensor by utilizing the co-array - a virtual array structure consisting of pairwise differences or sums of sensor positions. Although several sparse array configurations have been developed for passive sensing applications, far fewer active array designs exist.
arxiv +1 more source
Synthesis of Sparse Linear Arrays via Low-Rank Hankel Matrix Completion [PDF]
arXiv, 2022 In the process of realizing the synthesis of the antenna array synthesis, it is of practical significance to arrange the nonuniform array and reduce the number of elements. According to the Matrix Pencil Method (MPM), we proposed an improved nonuniform array algorithm for reducing the number of array elements.
arxiv
Spatial IDFT for Squint-Free Massive Arrays [PDF]
arXiv, 2023 This paper presents a novel technique to build squint-free massive phased arrays. This is accomplished by explicitly implementing a spatial IDFT to cancel out the DFT imposed by the array nature which causes beam squint. In addition, the paper analyzes the beam-squint issue, which arises from two mechanisms: the coherent bandwidth limitations and the ...
arxiv
A Discretization-Free Sparse and Parametric Approach for Linear Array Signal Processing [PDF]
IEEE Transactions on Signal Processing, 2013 Direction of arrival (DOA) estimation in array processing using uniform/sparse linear arrays is concerned in this paper. While sparse methods via approximate parameter discretization have been popular in the past decade, the discretization may cause ...
Zai Yang, Lihua Xie, Cisheng Zhang
semanticscholar +1 more source
Sparse Array Design via Fractal Geometries [PDF]
, 2020 Sparse sensor arrays have attracted considerable attention in various fields such as radar, array processing, ultrasound imaging and communications. In the context of correlation-based processing, such arrays enable to resolve more uncorrelated sources than physical sensors.
arxiv +1 more source
Robust GNSS Receivers by Array Signal Processing: Theory and Implementation
Proceedings of the IEEE, 2016 One of the main vulnerabilities of GNSS receivers is their exposure to intentional or unintentional jamming signals, which could even cause service unavailability.
C. Fernández-Prades +2 more
semanticscholar +1 more source
Photonic integrated field-programmable disk array signal processor
Nature Communications, 2020 Thanks to the nature of strong programmability, field-programmable gate arrays (FPGAs) have been playing a significant role in signal processing and control.
Weifeng Zhang, Jianping Yao
semanticscholar +1 more source
3D Printed Metallic Dual-Polarized Vivaldi Arrays on Square and Triangular Lattices [PDF]
, 2021 We report the first Vivaldi arrays monolithically fabricated exclusively using commercial, low-cost, 3D metal printing (direct metal laser sintering). Furthermore, we developed one of the first dual-polarized Vivaldi arrays on a triangular lattice, and compare it to a square lattice array.
arxiv +1 more source