Results 21 to 30 of about 43,068 (161)
Chirp Signals and Noisy Waveforms for Solid-State Surveillance Radars
Aerospace, 2017 Since the advent of “pulse compression” radar, the “chirp” signal (Linear Frequency Modulation, LFM) has been one of the most widely used radar waveforms.
Gaspare Galati +2 more
doaj +1 more source
IEEE Access, 2022 Broadband seismographs are used to collect seismic data over an extended period. Temperature, pressure, and humidity are field variables that can have an impact on the broadband seismograph’s performance as well as the accuracy of observational ...
Xue Bao, Fang Ye, Han Zhang, Chunwei Jin
doaj +1 more source
A template-free approach for waveform extraction of gravitational wave events
Scientific Reports, 2021 We develop a general data-driven and template-free method for the extraction of event waveforms in the presence of background noise. Recent gravitational-wave observations provide one of the significant scientific areas requiring data analysis and ...
A. Akhshi +5 more
doaj +1 more source
NeuroImage, 2021 Transcranial alternating current stimulation (tACS) can non-invasively modulate neuronal activity in the cerebral cortex, in particular at the frequency of the applied stimulation.
Mikolaj Kegler, Tobias Reichenbach
doaj +1 more source
Noise radar technology: Pseudorandom waveforms and their information rate [PDF]
2014 15th International Radar Symposium (IRS), 2014 The well-known LPI (Low Probability of Intercept) and antispoofing capabilities of some radar waveforms as well some other desirable feature such as a low sidelobes level of their autocorrelation function can be enhanced by “tailored” pseudo-random sequences, whose phase is made up by a deterministic part plus a variable random term.
GALATI, GASPARE +2 more
openaire +1 more source
Photoacoustics Waveform Design for Optimal Signal to Noise Ratio
Symmetry, 2022 Time-frequency analysis in waveform engineering can be applied to many detection and imaging systems, such as radar, sonar, and ultrasound to improve their Signal-to-Noise Ratio (SNR). Recently, photoacoustic imaging systems have attracted researchers’ attention.
Natalie Baddour, Zuwen Sun
openaire +1 more source
On the anti‐intercept features of noise radars
IET Radar, Sonar & NavigationRobustness against Electronic Warfare/Electronic Defence attacks represents an important advantage of Noise Radar Technology (NRT). An evaluation of the related Low Probability of Detection (LPD) and of Intercept (LPI) is presented for Continuous ...
Gaspare Galati, Gabriele Pavan
doaj +1 more source
Studies on 1D Electronic Noise Filtering Using an Autoencoder
KnowledgeAutoencoders are neural networks that have applications in denoising processes. Their use is widely reported in imaging (2D), though 1D series can also benefit from this function.
Marcelo Bender Perotoni +1 more
doaj +1 more source
IEEE Access, 2019 This paper discusses the direction-of-arrival (DOA) estimation problem in multiple-input multiple-output (MIMO) radar with non-orthogonal waveforms.
Chong Shen +4 more
doaj +1 more source
Remote Sensing, 2022 The problem of single-channel reception of global positioning system (GPS) communication waveforms makes passive sensing of aerial target difficult because of forward scatter.
Mingqian Liu +4 more
doaj +1 more source