Results 21 to 30 of about 5,705,928 (279)
Cognitive MIMO Frequency Diverse Array Radar with High LPI Performance [PDF]
International 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 +2 more sources
Analysis of beampattern dwell time for planar frequency diverse array
IET 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 +2 more sources
Optimal Carrier Frequency Design for Frequency Diverse Array Mimo Radar
ICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2023 In this work, we introduce a novel approach for designing the transmit frequency offset scheme based on Cramér-Rao lower bound (CRLB) minimization for a frequency diverse array multiple-input multiple-output (FDA-MIMO) radar.
Jie Cheng +3 more
openaire +3 more sources
Frequency diverse array with random logarithmically increasing frequency offset [PDF]
Microwave and Optical Technology Letters, 2020 AbstractThe frequency diverse arrays (FDAs) have been extensively investigated since it can provide a unique angle‐range‐dependent beampattern. This range‐dependent characteristic can suppress the range ambiguous clutters, leading to many novel potential Radar applications.
Gaojian Huang +3 more
openaire +4 more sources
Joint Decoupling Optimization of Frequency Offsets and Array Elements for Frequency Diverse Arrays
International Journal of Antennas and PropagationFrequency 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 ...
Yuming Lu +4 more
doaj +2 more sources
An investigation of a frequency diverse array
This thesis presents a novel concept for focusing an antenna beam pattern as a function of range, time, and angle. In conventional phased arrays, beam steering is achieved by applying a linear phase progression across the aperture. This thesis shows that
Antonik, P.
openaire +2 more sources
Frequency Diverse Array for Signal Geofencing in Wireless Communications: Does it Work? [PDF]
IEEE Open Journal of Antennas and PropagationFrequency Diverse Array is an advanced antenna technology for clustering received power spatial distribution in specific areas, which has shown significant potential in many applications, including radar or wireless power transfer.
Simone Del Prete +2 more
doaj +3 more sources
On the Sideband Harmonics in Pulsed Frequency Diverse Arrays [PDF]
IEEE Access, 2023 Pulsed frequency diverse arrays (FDAs) have recently garnered significant research attention in radar and sensing applications due to their range-dependent radiation properties. However, the time-dependent nature of radiation can limit the benefits of FDAs.
Ihsan Kanbaz +4 more
openaire +4 more sources
Parametric localisation in frequency diverse array [PDF]
IET Radar, Sonar & Navigation, 2020 The authors present a non‐traditional, parametric method for velocity, angle, and range estimation in a frequency diverse array radar. Unlike the traditional beamforming techniques, the proposed scheme transmits an omni‐directional sinusoid regardless of the target locations.
Mahata, Kaushik, Hyder, Md Mashud
openaire +1 more source
Design of frequency invariant beamformer for broadband arrays [PDF]
, 2007 A simple method for the design of a class of arrays with frequency invariant beam patterns is proposed. Starting from the desired frequency invariant beam pattern of an n-D array, the proposed method uses a series of substitutions and an n-D inverse ...
Weiss, Stephan +5 more
core +3 more sources