Results 11 to 20 of about 5,538,194 (288)
Time Frequency Direction Modulation Based on Nonlinear Frequency Diverse Array
IEEE Access, 2023 The conventional frequency diversity array (FDA) can generate arcsine form of continuous direction modulation (DM) waveforms which can automatically scan the entire space range.
Haihua Xie +4 more
doaj +3 more sources
Frequency Diversity Array for DOA Estimation [PDF]
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 ...
NAUMAN ANWAR BAIG +2 more
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
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
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 +4 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
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 +4 more sources
A New Class of Broadband Arrays With Frequency Invariant Beam Patterns [PDF]
, 2004 In this paper, a new class of broadband arrays with frequency-invariant beam pattern is proposed. By suitable substitutions, the beam pattern of a continuous sensor array with continuous temporal processing can be regarded as the Fourier transform of its
S. Weiss +5 more
core +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
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 +2 more sources