Results 1 to 10 of about 1,467 (253)
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 +3 more sources
Wideband, frequency-domain beamforming for coherent signal processing [PDF]
The Journal of the Acoustical Society of America, 1983 Coherent detection processors for sonar (e.g., matched filters for active systems) require continuous time series as input and have conventionally been associated with delay-and-sum time-domain beamformers. As an alternative, we have extended frequency-domain beamforming techniques to retain the coherence of wideband signals and have demonstrated ...
Mark E. Weber, Rodney Heisler
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Time-scale analysis of abrupt changes corrupted by multiplicative noise [PDF]
, 2000 Multiplicative Abrupt Changes (ACs) have been considered in many applications. These applications include image processing (speckle) and random communication models (fading).
Castanié, Francis +2 more
core +2 more sources
Space scanning FMCW-based two-dimensional frequency diverse array radar
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 +1 more source
Vietnam Journal of Mechanics, 2013 Ultrasonic Velocity Profile (UVP) method for measurement of single-phase and two-phase flow in a vertical pipe has recently been developed in the Laboratory for industrial and Environmental Fluid Dynamics, Institute of Mechanics, VAST.
Tat Thang Nguyen +4 more
doaj +1 more source
Tunable one-dimensional microwave emissions from cyclic-transition three-level atoms [PDF]
, 2010 By strongly driving a cyclic-transition three-level artificial atom, demonstrated by such as a flux-based superconducting circuit, we show that coherent microwave signals can be excited along a coupled one-dimensional transmission line.
Jia, W. Z., Wang, Z. D., Wei, L. F.
core +2 more sources
In-Process Chatter Detection Using Signal Analysis in Frequency and Time-Frequency Domain [PDF]
Machines, 2021 All machining processes involve vibrations generated by structural sources such as a machine’s moving parts or by the interaction between cutting tools and work-pieces. Relative vibrations between the work-pieces and the cutting tool are the most relevant from the point of view of the regenerative chatter phenomenon.
Perrelli M. +3 more
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Deep fusion of multi-channel neurophysiological signal for emotion recognition and monitoring [PDF]
, 2017 How to fuse multi-channel neurophysiological signals for emotion recognition is emerging as a hot research topic in community of Computational Psychophysiology.
Hou, Yuexian +4 more
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Frequency Domain Signal Processing for Acoustic Sensors [PDF]
, 2000 Abstract : Report developed under SBIR contract for topic BMDO99-003A. This contract effort demonstrated the feasibility of separating cruise missile class targets when there are multiple targets observed by a ground positioned acoustic sensor. Several programs (e.g., Steel Rattler, FASDR) have addressed the use of small, remotely deployed acoustic ...
Ilya Schiller +2 more
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Modified frequency domain kurtosis for signal processing
Electronics Letters, 1994 An operator sensitive to signal probability distribution is obtained, by integrating ideas from higher-order statistics and a frequency approach to signal processing. This function, based on a modified frequency domain kurtosis, assigns a level of stationarity to each signal spectrum component and enhances unsteady components over stationary sinusoids ...
C. Ottonello, S. Pagnan
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