Results 41 to 50 of about 150,152 (290)

Intra-pulse modulation recognition using short-time ramanujan Fourier transform spectrogram

EURASIP Journal on Advances in Signal Processing, 2017
Intra-pulse modulation recognition under negative signal-to-noise ratio (SNR) environment is a research challenge. This article presents a robust algorithm for the recognition of 5 types of radar signals with large variation range in the signal ...
Xiurong Ma, Dan Liu, Yunlong Shan
doaj   +1 more source

Blind Phaseless Short-Time Fourier Transform Recovery [PDF]

IEEE Transactions on Information Theory, 2020
The problem of recovering a pair of signals from their blind phaseless short-time Fourier transform measurements arises in several important phase retrieval applications, including ptychography and ultra-short pulse characterization. In this paper, we prove that in order to determine a pair of generic signals uniquely, up to trivial ambiguities, the ...
Tamir Bendory, Dan Edidin, Yonina C. Eldar   +2 more
openaire   +2 more sources

Synchroextracting Transform Based on the Novel Short-Time Fractional Fourier Transform

Fractal and Fractional
As a generalization of the short-time Fourier transform (STFT), the novel short-time fractional Fourier transform (NSTFRFT) has been introduced recently.
Bei Li, Zhuosheng Zhang
doaj   +1 more source

Fractional fourier transform based monopulse radar for combating jamming interference

, 2010
Monopulse radars are used to track a target that appears in the look direction beam width. The distortion produced when manmade high power interference (jamming).
S.A. Elgamel, Elgamel, Sherif A.E.H., Soraghan, J.J., J.J. Soraghan   +3 more
core   +1 more source

Fourier transforming a trapped Bose-Einstein condensate by waiting a quarter of the trap period: simulation and applications [PDF]

, 2006
We investigate the property of isotropic harmonic traps to Fourier transform a weakly interacting Bose–Einstein condensate (BEC) every quarter of a trap period.
Ohberg, Patrik; id_orcid, Ohberg, P., Courtial, J., Whyte, G., Whyte, Graeme, Courtial, Johannes   +5 more
core   +1 more source

Interference Suppression Algorithm Based on Short Time Fractional Fourier Transform

Sensors
Narrowband interference and wideband interference are both common jamming signals against synthetic aperture radar, which can degrade the signal severely.
Xiaolu Guo, Jia Su, Nan Zhu
doaj   +1 more source

Time gated Fourier transform spectroscopy as a technique for disentangling short- and long-lived luminescence

Communications Materials, 2023
Overlapping short- and long-lived luminescence signals are often encountered and are not trivial to disentangle in a single measurement. Here, we demonstrate for a broad range of emitters that time gated Fourier transform spectroscopy can be used as a ...
Mikkel Baldtzer Liisberg, Tom Vosch
doaj   +1 more source

Frequency-Undersampled Short-Time Fourier Transform

CoRR, 2020
Submitted to IEEE ICASSP ...
openaire   +2 more sources

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Rotor-System Log-Decrement Identification Using Short-Time Fourier-Transform Filter

International Journal of Rotating Machinery, 2015
With the increase of the centrifugal compressor capability, such as large scale LNG and CO2 reinjection, the stability margin evaluation is crucial to assure the compressor work in the designed operating conditions in field.
Qihang Li, Weimin Wang, Lifang Chen, Dan Sun   +3 more
doaj   +1 more source