Results 81 to 90 of about 270,830 (185)

SAR 3D sparse imaging based on CLA

The Journal of Engineering, 2019
A novel method for synthetic aperture radar (SAR) three-dimensional (3D) sparse imaging based on a coprime linear array (CLA) is proposed. To reduce the geometric resolution loss caused by under-sampled sparse SAR, a jointed sparse imaging approach is ...
Bokun Tian, Shunjun Wei, Liwei Dang, Min Yan, Xiaoling Zhang   +4 more
doaj   +1 more source

A Study on Capacitive Micromachined Ultrasonic Transducer Periodic Sparse Array. [PDF]

Micromachines (Basel), 2021
Zhang T, Zhang W, Shao X, Yang Y, Wang Z, Wu Y, Pei Y.   +6 more
europepmc   +1 more source

A Region-based Approach for Sparse Parallel Computing [PDF]

This paper introduces a technique for parallel sparse computation by extending the array-language concept of regions---regular programmer-specified index sets used for specifying array computations.
Bradford L. Chamberlain, E Christopher Lewis, Lawrence Snyder   +2 more
core   +1 more source

Low-Sidelobe Pattern Synthesis for Sparse Conformal Arrays Based on PSO-SOCP Optimization

IEEE Access, 2018
This paper addresses the constrained multi-objective optimization problem of sparse conformal arrays designing. The objective of array synthesis is to find an optimal element arrangement on a conformal surface and its associated excitation strategy ...
Hailin Li, Yachao Jiang, Yuan Ding, Jing Tan, Jianjiang Zhou   +4 more
doaj   +1 more source

Design of Ultrasonic Synthetic Aperture Imaging Systems Based on a Non-Grid 2D Sparse Array. [PDF]

Sensors (Basel), 2021
de Souza JCE, Parrilla Romero M, Higuti RT, Martínez-Graullera Ó.   +3 more
europepmc   +1 more source

Compilation of Shape Operators on Sparse Arrays

Proceedings of the ACM on Programming Languages
We show how to build a compiler for a sparse array language that supports shape operators such as reshaping or concatenating arrays, in addition to compute operators. Existing sparse array programming systems implement generic shape operators for only some sparse data structures, reduce shape operators on other data structures to ...
Alexander J. Root, Bobby Yan, Peiming Liu, Christophe Gyurgyik, Aart J. C. Bik, Fredrik Kjolstad   +5 more
openaire   +1 more source

Low sidelobe planar electrically large sparse array antenna with element number reduction based on genetic algorithm

IET Microwaves, Antennas & Propagation
Conventionally, both electrically larger (EL) arrays and sparse arrays offer the advantage of element number reduction but disadvantage of high sidelobe levels.
Yangkun Zhu, Wenyu Ma, Chuang Wang, Wenquan Cao   +3 more
doaj   +1 more source

Sparse antenna array design methodologies–A review

Journal of Electronic Science and Technology
Designing a sparse array with reduced transmit/receive modules (TRMs) is vital for some applications where the antenna system's size, weight, allowed operating space, and cost are limited.
Pan Wu, Yan-Hui Liu, Zhi-Qin Zhao, Qing-Huo Liu   +3 more
doaj   +1 more source

A V‐Shaped Fourth‐Order Sparse Array Design for 2‐D Direction of Arrival Estimation

IET Radar, Sonar & Navigation
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 constitutes a significant research direction in the
Ziwen Chen, Weijia Cui, Bin Ba
doaj   +1 more source

Sparse: A more modern sparse array library [PDF]

Proceedings of the Python in Science Conference, 2018
openaire   +1 more source