Results 61 to 70 of about 731 (131)
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.Traditional adaptive beamforming techniques focus solely on optimising the excitation weights of array elements while neglecting the critical influence of element positioning on beamforming performance. To enhance array degrees of freedom and achieve superior beamforming capabilities, this paper proposes a novel joint optimisation method that ...
Weinian Li +4 more
wiley +1 more source
A V‐Shaped Fourth‐Order Sparse Array Design for 2‐D Direction of Arrival Estimation
IET Radar, Sonar &Navigation, Volume 19, Issue 1, January/December 2025.A novel planer V‐shaped array for higher DOA estimation accuracy and larger array aperture, which has several experiment to prove it. ABSTRACT Degrees of freedom (DOF) serves as a critical metric for evaluating the design of sparse arrays. Developing novel sparse arrays with enhanced degrees of freedom and mathematically expressible structures ...
Ziwen Chen, Weijia Cui, Bin Ba
wiley +1 more source
International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.Recently, symmetric sparse uniform linear arrays (SSULAs) have been widely used for mixed far‐field (FF) and near‐field (NF) source localization owing to their high degrees of freedom and large array aperture. However, the heavy levels of mutual coupling of SSULAs limit the accuracy of source localization.
Yiming Guo +5 more
wiley +1 more source
Sparse Array for Beamforming in Wireless Communication Systems
Journal of Engineering, Volume 2025, Issue 1, 2025.The usefulness of smart antennas lies in enhancing the received signal from a particular direction while suppressing unwanted interfering signals and noise from other directions. This process is known as beamforming. In this paper, we study beamforming using different antenna array geometries to improve performance.
Oscar Ossa-Molina +3 more
wiley +1 more source
Improved Sparrow Search Algorithm for Sparse Array Optimization
Modelling and Simulation in Engineering, Volume 2025, Issue 1, 2025.The synthesis problem of the number of array elements, array element spacing, and array formation is widely concerned in sparse array optimization. The local optimum problem is still an urgent problem to be solved in the existing optimization algorithms.
Juanjuan Ji +6 more
wiley +1 more source
Sparsity in array processing: methods and performances
, 2013 International audienceIn the last few years, we witnessed to an extraordinary and still growing development of sparse signal recovery in a wide number of applicative contexts such as communications, biomedicine, radar, microwave imaging, source ...
Boyer, Remy, Larzabal, Pascal
core
Design of Nonredundant Sparse Planar Arrays With Reduced Mutual Coupling [PDF]
Most existing sparse planar arrays cannot fully realize their potential in terms of the degrees-of-freedom (DOFs) due to redundancies in their co-array generation.
Li, R, Liu, W, Wang, L, Wang, Y, Yan, H
core +1 more source
Control of fluid flows and other systems governed by partial differential-algebraic equations
, 2010 The motion of fluids, such as air or water, is central to many engineering systems of significant economic and environmental importance. Examples range from air/fuel mixing in combustion engines to turbulence induced noise and fatigue on aircraft ...
Jones, Bryn Llywelyn +1 more
core +1 more source
Robust Adaptive Beamforming Algorithm for Sparse Subarray Antenna Array Based on Hierarchical Weighting. [PDF]
Micromachines (Basel), 2022 Yang J, Liu X, Tu Y, Li W.
europepmc +1 more source
Computationally Efficient Direction-of-Arrival Estimation Algorithms for a Cubic Coprime Array. [PDF]
Sensors (Basel), 2021 Gong P, Chen X.
europepmc +1 more source