Results 31 to 40 of about 41,729 (299)

Cognitive MIMO Frequency Diverse Array Radar with High LPI Performance

open access: yesInternational Journal of Antennas and Propagation, 2016
Frequency diverse array (FDA) has its unique advantage in realizing low probability of intercept (LPI) technology for its dependent beam pattern. In this paper, we proposed a cognitive radar based on the frequency diverse array multiple-input multiple ...
Ling Huang   +3 more
doaj   +1 more source

Recent Advances in Frequency Diverse Array Radar Techniques

open access: yesLeida xuebao, 2022
Due to the range dependence and time-varying array factor of Frequency Diverse Array (FDA) radar, it can overcome the miss of range variable in traditional phased-array factor and gain loss of Multiple-Input Multiple-Output (MIMO) radar array.
Wenqin WANG, Shunsheng ZHANG
doaj   +1 more source

Frequency Diverse Array Radar Cramér-Rao Lower Bounds for Estimating Direction, Range, and Velocity

open access: yesInternational Journal of Antennas and Propagation, 2014
Different from phased-array radar, frequency diverse array (FDA) radar offers range-dependent beampattern and thus provides new application potentials. But there is a fundamental question: what estimation performance can achieve for an FDA radar? In this
Yongbing Wang   +2 more
doaj   +1 more source

Performance Analysis of Classification Algorithms for Activity Recognition using Micro-Doppler Feature [PDF]

open access: yes, 2018
Classification of different human activities using micro-Doppler data and features is considered in this study, focusing on the distinction between walking and running.
Le Kernec, Julien, Lin, Yier
core   +1 more source

On RF localisation deception capability of FDA signal under interferometry reconnaissance

open access: yesThe Journal of Engineering, 2019
Phased-array antennas are known for their capability to electronically steer a beam with high effectiveness, but beam steering is fixed in an angle for all range cells.
Xihui Zhang   +3 more
doaj   +1 more source

Analysis of beampattern dwell time for planar frequency diverse array

open access: yesIET Signal Processing, 2021
Frequency diverse array (FDA) has received much attention due to its both range–angle‐dependent beampattern. However, most of the existing works focus on the linear FDA, and time‐varying characteristics of its beampattern only give a rough qualitative ...
Hui Chen, Zi‐Hao Li, Wen‐Qin Wang
doaj   +1 more source

Research on beam control of density taper array sin-FDA based on subarray structure [PDF]

open access: yesZhihui kongzhi yu fangzhen
Frequency Diverse Array (FDA) is a brand-new electronically scanned radar system. The time-range-angle three-dimensional correlation characteristics of its beampattern have broad application prospects in the fields of electronic countermeasures and ...
ZHANG Jing, CHEN Chushu, WANG Bo
doaj   +1 more source

The Random Frequency Diverse Array: A New Antenna Structure for Uncoupled Direction-Range Indication in Active Sensing

open access: yes, 2016
In this paper, we propose a new type of array antenna, termed the Random Frequency Diverse Array (RFDA), for an uncoupled indication of target direction and range with low system complexity.
Liu, Yimin   +3 more
core   +1 more source

Clinical actionability of comprehensive genomic profiling for management of rare or refractory cancers [PDF]

open access: yes, 2016
Background. The frequency with which targeted tumor sequencing results will lead to implemented change in care is unclear. Prospective assessment of the feasibility and limitations of using genomic sequencing is critically important. Methods.
Aisner, Joseph   +29 more
core   +1 more source

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