Results 51 to 60 of about 11,465 (153)

Exploiting frequency diverse array processing to improve SAR image resolution

, 2008
Cross-range resolution in spotlight synthetic aperture radar (SAR) is primarily a function of the angular extent (Deltathetas) over which data is collected.
Michael A. Saville, Farooq, Jawad, Jawad Farooq, Michael A. Temple, Saville, Michael A., Temple, Michael A.   +5 more
core   +1 more source

Cramér-Rao Bound of Joint DOA-Range Estimation for Coprime Frequency Diverse Arrays

Remote Sensing, 2022
Frequency diverse array (FDA) produces a beampattern with controllable direction and range by slightly shifting the carrier frequencies across the elements, which is attractive in many applications.
Zihuan Mao, Shengheng Liu, Si Qin, Yongming Huang   +3 more
doaj   +1 more source

A Two-Ray Multipath Model for Frequency Diverse Array-Based Directional Modulation in MISOME Wiretap Channels

, 2019
A two-ray multipath model for frequency diverse array (FDA)-based directional modulation (DM) is proposed in multi-input single-output multi-eavesdropper (MISOME) wiretap channels for the first time.
Cheng, Qian, Fusco, Vincent; id_orcid, Zhu, Jiang, Wang, Shilian   +3 more
core   +1 more source

Airborne FDA-MIMO Radar Modeling and Detection Performance Analysis

, 2021
In the conventional frequency diverse array (FDA) radar designs, generalized likelihood ratio test (GLRT) detection utilizes coherent pulses. However, the impacts of an FDA multiple-input multiple-output (FDA-MIMO) radar system for detection with ...
Yan, Yisheng, Basit, Abdul, Wang, Wen-Qin, Cai, Jingye   +3 more
core   +1 more source

Cooperated Moving Target Detection Approach for PA-FDA Dual-Mode Radar in Range-Ambiguous Clutter

, 2023
This paper proposes a cooperated range ambiguous clutter suppression method for moving target detection in the background of range-ambiguous clutter with a phased array (PA)–frequency diverse array (FDA) dual-mode radar.
Shengqi Zhu, Jingwei Xu, Zhixin Liu, Ximin Li, Lan Lan, Xiongpeng He   +5 more
core   +1 more source

FDA-MIMO Beampattern Synthesis with an Analytical Method

International Journal of Aerospace Engineering, 2021
Since the beampattern has the characteristics of range-angle dependence, frequency diverse array multiple-input multiple-output (FDA-MIMO) radar has a good application prospect.
Changlin Zhou, Chunyang Wang, Jian Gong, Ming Tan, Yingjian Zhao, Mingjie Liu   +5 more
doaj   +1 more source

Revised Dingo Optimization Algorithm for Frequency Offset Design in FDA‐MIMO Radar [PDF]

The conventional frequency diverse array (FDA) system, using linear frequency offsets, generates periodic grating lobes and coupling effects, which may increase interference for potential users and difficulty in controlling parameters.
Li, Wenxing, Dong, Kai, Yang, Bin, Zhang, Yimeng   +3 more
core   +1 more source

An Overview of Frequency Diverse Array Radar Technology

Leida xuebao, 2018
The carrier frequencies of array elements in a Frequency Diverse Array (FDA) radar are slightly distinguished, leading to a range-angle-time-dependent transmit beampattern. Thus, an FDA radar carries additional information in a certain range and provides
Xu Jingwei, Zhu Shengqi, Liao Guisheng, Zhang Yuhong   +3 more
doaj   +1 more source

Angle-range-polarization-dependent beamforming for polarization sensitive frequency diverse array

, 2019
In this paper, we present a polarization sensitive frequency diverse array (PSFDA), which benefits both from frequency diverse array (FDA) and polarization sensitive array (PSA), producing angle-range-polarization-dependent beamforming capability.
HuaiZong Shao, Hui Chen, HongYang Chen
core   +1 more source

Joint Sparsity-Based Range-Angle-Dependent Beampattern Synthesis for Frequency Diverse Array

IEEE Access, 2017
For frequency diverse array (FDA) range-angle-dependent beampattern synthesis, the objective is to obtain the desired beampattern performance using fewer antenna elements or smaller aperture.
Hui Chen, Huai-Zong Shao, Wen-Qin Wang
doaj   +1 more source