Results 11 to 20 of about 5,705,928 (279)
Beampattern Optimization for Frequency Diverse Array With Sparse Frequency Waveforms
IEEE Access, 2017 Multiple-input multiple-output (MIMO) radar equipped with a frequency diverse array (FDA) can produce a range-dependent beampattern and increase the degrees-of-freedom of the antenna array.
Chaoyun Mai +3 more
doaj +5 more sources
Index Modulation for Frequency Diverse Array [PDF]
IEEE Antennas and Wireless Propagation Letters, 2020 The index modulation (IM) approach adds an extra signal modulation dimension by utilizing a subcarrier index domain, which is in addition to the traditional IQ domain. A frequency diverse array (FDA) technology is rapidly developing as a new technique for radar systems.
Gaojian Huang +3 more
openaire +4 more sources
Tangent hyperbolic circular frequency diverse array radars
The Journal of Engineering, 2016 Frequency diverse array (FDA) with uniform frequency offset (UFO) has been in spot light of research for past few years. Not much attention has been devoted to non-UFOs in FDA. This study investigates tangent hyperbolic (TH) function for frequency offset
Sarah Saeed +3 more
doaj +2 more sources
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 +2 more sources
Prospects of FMCW-based frequency diverse array radar [PDF]
The Journal of Engineering, 2019 The linear frequency modulated (LFM) frequency modulated continuous wave (FMCW)-based frequency diverse array (FDA) radar concept is investigated in detail. The radar operates as a linear pulsed FMCW/FDA in the transmission (TX) mode while it operates as
Ramazan Çetiner +3 more
doaj +2 more sources
Range-Angle-Dependent Beamforming by Frequency Diverse Array Antenna [PDF]
International Journal of Antennas and Propagation, 2012 This paper proposes a range-angle-dependent beamforming for frequency diverse array (FDA) antenna systems. Unlike conventional phased-array antenna, the FDA antenna employs a small amount of frequency increment compared to the carrier frequency across ...
Wen-Qin Wang, Huaizong Shao, Jingye Cai
doaj +2 more sources
Beampattern analysis of frequency diverse array radar: a review [PDF]
EURASIP Journal on Wireless Communications and Networking, 2021 Electronic beam steering is an essential feature of state-of-the-art radar systems. Conventional phased array (PA) radars with fixed carrier frequencies are well-known for electronically steering their beam with high directivity.
Zeeshan Ahmad, Meng Chen, Shu-Di Bao
doaj +3 more sources
Space scanning FMCW-based two-dimensional frequency diverse array radar [PDF]
The Journal of Engineering, 2019 The frequency-modulated continuous wave (FMCW)-based frequency diverse array (FDA) radar concept is extended to two dimensions (2D). The radar operates as a linear pulsed FMCW/FDA in the transmission (TX) mode while it operates as a pulsed FMCW/phased ...
Savaş Karadağ +2 more
doaj +2 more sources
Antenna Element Index Modulation for Frequency Diverse Array [PDF]
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 +2 more sources
Analysis of multicarrier frequency diverse array radar over time
IET Signal Processing, 2022 The frequency diverse array (FDA) can provide degrees of freedom in both the range and angle domains by controlling the frequency offset across adjacent elements.
Yingjian Zhao +5 more
doaj +2 more sources