On idempotent stable range 1 matrices

Autor: Călugăreanu Grigore, Pop Horia F.

Publikováno v: Special Matrices, Vol 10, Iss 1, Pp 251-257 (2022)

We characterize the idempotent stable range 1, 2 × 2 matrices over commutative rings and in particular the integral matrices with this property. Several special cases and examples complete the subject.

Externí odkaz: https://doaj.org/article/0b3beaf0e4e04cd1b465238d60e88fb7

A Novel Approach of 2-D DOA Estimation by Employing Coprime Linear Array Motion

Autor: Zhi Zhang, Yu Guo, Jianhong Chu, Yuzhen Huang

Publikováno v: IEEE Communications Letters. 26:69-73

In this letter, we explore the feature of coprime linear array (CLA) motion for enhanced array aperture and higher degree of freedom (DOF) by implementing synthetic aperture processing. Since the traditional fixed CLA cannot achieve two-dimensional (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29688318729588d008953ebd3fa2d430
https://doi.org/10.1109/lcomm.2021.3123976

Staggered Coprime Pulse Repetition Frequencies Synthetic Aperture Radar (SCopSAR)

Autor: Michael Davies, Abdulmalik Aldharrab

Publikováno v: Aldharrab, A & Davies, M E 2021, ' Staggered Coprime Pulse Repetition Frequencies Synthetic Aperture Radar (SCopSAR) ', IEEE Transactions on Geoscience and Remote Sensing, pp. 1-11 . https://doi.org/10.1109/TGRS.2021.3087518

High-resolution wide-swath synthetic aperture radar (HRWS-SAR) imaging is highly desirable since it allows one to produce high-resolution SAR images of large areas during a short visit time. In this article, staggered coprime pulse repetition frequen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4e5f347410daedd26f72328b895be05
https://doi.org/10.1109/tgrs.2021.3087518

Enumeration of $${\mathbb {Z}}_4$$-double cyclic codes

Autor: Tian Wu, Jian Gao

Publikováno v: Journal of Applied Mathematics and Computing. 68:3251-3261

In this paper, we study enumeration formulas of $${\mathbb {Z}}_4$$ -double cyclic codes. We give the enumerations of separable $${\mathbb {Z}}_4$$ -double cyclic codes and a class of non-separable $${\mathbb {Z}}_4$$ -double cyclic codes with the co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cd51601e8f1e4bb0ff41ae3b5600a22b
https://doi.org/10.1007/s12190-021-01668-w

Pseudo Noise Subspace Based DOA Estimation for Unfolded Coprime Linear Arrays

Autor: Xiaoqing Yang, Lu Cao, Xiangdong Huang, Wei Lu

Publikováno v: IEEE Wireless Communications Letters. 10:2335-2339

To achieve a better tradeoff between the direction-of-arrival (DOA) estimation resolution and complexity compared to the existing sparse array based estimators, this letter proposes a pseudo noise subspace based DOA estimator for an unfolded coprime

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::80f8345d7b463952994cb351ee140dfe
https://doi.org/10.1109/lwc.2021.3091989