Results 31 to 40 of about 133,523 (256)
Frequency Diverse Array Auto-Scanning Beam Characteristics and Potential Radar Applications
IEEE Access, 2022 Different from the phased-array with the same carrier frequency for all elements providing only angle-dependent beampattern, frequency diverse array (FDA) using a small frequency offset across its array elements offers new application capabilities due to
Wen-Qin Wang
doaj +1 more source
Frequency Diversity Array for DOA Estimation
Mehran University Research Journal of Engineering and Technology, 2017 The localization of targets has been presented in this article. DOA (Direction of Arrival) is an important parameter to be determined by radar. The MLE (Maximum Likelihood Estimator) has been widely used to accurately and efficiently estimate the DOAs of multiple targets.
NAUMAN ANWAR BAIG +2 more
openaire +3 more sources
A Joint Frequency Space Design Approach for Efficient Planar Frequency Diverse Arrays
Scientific Reports, 2023 Abstract Antenna arrays benefit from spatial diversity, which enables the control of the pattern specifications in space. Adding frequency diversity to arrays provides an opportunity to control the beams in the Space-Time domain. Contrary to the conventional arrays, the added frequency diversity in the Frequency Diverse Arrays (FDA) leads to ...
Maryam Hasheminasab +2 more
openaire +3 more sources
Focusing RF-on demand by Logarithmic Frequency-Diverse Arrays
2020 IEEE Wireless Power Transfer Conference (WPTC), 2020 The radiating systems exploiting the frequency diversity of the antennas are powerful architectures, that can have a big impact on wireless power transmission applications, but their characterization is merely theoretical. This paper offers a deep and critical numerical analysis of frequency- diverse arrays and shows the advantages of the family with ...
Fazzini E. +3 more
openaire +1 more source
Advances on Frequency Diverse Array Radar and Its Applications
Leida xuebao, 2018 Unlike the conventional phased array that provides only angle-dependent transmit beampattern, Frequency Diverse Array (FDA) employs a small frequency increment across its array elements to produce automatic beam scanning without requiring phase shifters ...
Wang Wenqin +3 more
doaj +1 more source
Mixed targets localization using symmetric nested frequency diverse array radar
IET Signal Processing, 2021 A mixed near‐field and far‐field targets localization method based on sparse signal reconstruction and subspace method is presented, which can obtain both direction‐of‐arrival (DOA) and range information of the targets by utilizing symmetric nested ...
Hui Chen, Wen‐Qin Wang, Wei Wang
doaj +1 more source
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 +2 more sources
Antenna Element Index Modulation for Frequency Diverse Array
International Journal of Antennas and Propagation, 2019 In this paper, we propose a new architecture and provide performance analysis for frequency diverse array (FDA) Radar combined with the index modulation (IM) techniques. Here, the IM concept is applied upon frequency offsets in an FDA.
Gaojian Huang +3 more
doaj +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
Frequency Diverse Array Super-Resolution Design With Element Locator Polynomial Rooting Approach
IEEE Access, 2023 Unlike traditional phased-array only generating angle-dependent beampattern, the relatively new frequency diverse array (FDA) produces an angle-range-dependent transmit beampattern that can provide many new applications.
Wen-Qin Wang
doaj +1 more source