Results 41 to 50 of about 127 (116)

Two-Dimensional Beampattern Synthesis for Polarized Smart Antenna Array and Its Sparse Array Optimization

International Journal of Antennas and Propagation, 2020
Polarized smart antenna array has attracted considerable interest due to its capacity of matched reception or interference suppression for active sensing systems.
Zhikun Chen, Tao Li, Dongliang Peng, Kang Du   +3 more
doaj   +1 more source

Synthesis of Linear and Planar Arrays Via Sequential Convex Optimizations

IEEE Access, 2020
In this paper, an iterative procedure for the synthesis of sparse arrays radiating focused beampattern is presented. The proposed approach provides a significant reduction in the complexity of the beam forming network, which is fulfilled by reducing the ...
Zhengdong Qi, Yechao Bai, Xinggan Zhang
doaj   +1 more source

Design and Optimization of Finite Alphabet Waveforms for Multiple‐Antenna Radar Covariance Matching

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This article propose a novel method for finite‐alphabet waveform generation based on constrained matrix decomposition. It also expands theoretical feasibility bounds for generating covariance matrices with binary waveforms, proves that matrices from autoregressive processes are always realizable and introduces an optimal adjustment procedure for ...
Karim Saifullin, Sajid Ahmed, Mohamed‐Slim Alouini   +2 more
wiley   +1 more source

Research on Phase Characteristics of FDA‐AWACS and Direction Finding Mechanism Based on Anti‐Phase Method

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This paper investigates the phase‐frequency response characteristics of frequency diverse array (FDA) radar on airborne warning and control system (AWACS) platforms and its deception mechanism against interferometric direction finders, aiming to address the vulnerability of AWACS to precise interception by passive direction‐finding systems due to poor ...
Jing Zhang, Bo Wang, Haowei Zhang
wiley   +1 more source

Research on Beampattern Synthesis of Conformal Array Based on Space-Variability Suppression

Sensors
In order to solve the problem that the array beampattern varies greatly with the angle during spatial scanning, this paper presents a synthesis method of the conformal array beampattern based on “spatial-variability (SV)” suppression.
Sijia Liu, Minghai Pan
doaj   +1 more source

Phase‐Only Optimization With Increased Degrees of Freedom for Flat‐Top Beampattern Synthesis of Frequency Diverse Array Radar

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
In this paper, we propose a novel phaseonly flat‐top beampattern synthesis method for FDAs. To increase the degrees of optimization freedom, the objective function is formulated to minimise mainlobe ripple by evaluating the squared difference between the synthesised and target beam energies, thereby eliminating the restrictive need for rigid phase ...
Kuandong Gao, Mingxiang Guan, Tang Hui, Wen‐qin Wang   +3 more
wiley   +1 more source

Transmit Waveform Design for Symbol-level Precoding-based One-bit Dual-functional Radar-communication

Leida xuebao
This study explores the use of one-bit Digital-to-Analog Converters (DAC) to mitigate the challenges of high hardware costs and excessive power consumption in large-scale Multiple-Input Multiple-Output (MIMO) communication and radar systems.
Zhuoyuan HE, Shengyao CHEN, Han ZHU, Feng XI, Hongtao LI, Zhong LIU   +5 more
doaj   +1 more source

Phase‐Only Optimization Based on a Riemannian Manifold for the Low Probability of Intercept Method of Frequency Diverse Array

International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
In this paper, a phase‐only beampattern optimization algorithm is proposed for a frequency diverse array (FDA) radar to achieve a low probability of intercept (LPI). To avoid the high hardware complexity of joint amplitude–phase optimization and performance loss caused by simple phase truncation, we formulate a fractional quadratic optimization ...
Kuandong Gao, Mingxiang Guan, Tang Hui, Wu Zhou, Wenqin-Wang, Liton Chandra Paul   +5 more
wiley   +1 more source

Joint Decoupling Optimization of Frequency Offsets and Array Elements for Frequency Diverse Arrays

International Journal of Antennas and Propagation, Volume 2026, Issue 1, 2026.
Frequency diverse array (FDA) has a distance‐angle–dependent beam direction map, which has a greater application advantage than phased array. However, due to the distance‐angle coupling and periodicity of its beam direction map, it makes the parameter information of the target obtained through FDA have ambiguous phenomena. Currently, researchers mostly
Yuming Lu, Qinlin Li, Kefei Liao, Ningbo Xie, Hanbo Chen, Giovanni Magno   +5 more
wiley   +1 more source

Robust Multicast Beamforming for Jittering UAV: A Secrecy Energy Efficiency Perspective

IET Communications, Volume 19, Issue 1, January/December 2025.
This paper proposes a secure and energy‐efficient maximization scheme for a UAV enabled multicast communication system with jittering effects. The wiretap scenario is extended to the coordinated eavesdropping and the robust beamforming scheme is provided.
Jian Ouyang, Jing Ding, Chengyang Liu, Xiaoyu Liu, Min Lin   +4 more
wiley   +1 more source