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Introduction to Noise Radar and Its Waveforms [PDF]

open access: yesSensors, 2020
In the system-level design for both conventional radars and noise radars, a fundamental element is the use of waveforms suited to the particular application. In the military arena, low probability of intercept (LPI) and of exploitation (LPE) by the enemy
Francesco De Palo   +4 more
doaj   +5 more sources

Full recovery of ultrafast waveforms lost under noise [PDF]

open access: yesNature Communications, 2021
Extracting weak, ultrafast single-shot waveforms from a noisy background has critical uses in many applications. Here, the authors present a method to enhance signals and recover arbitrary waveforms from very noisy backgrounds by manipulating the ...
Benjamin Crockett   +3 more
doaj   +3 more sources

Noise Radar Technology: Waveforms Design and Field Trials [PDF]

open access: yesSensors, 2021
Performance of continuous emission noise radar systems are affected by the sidelobes of the output of the matched filter, with significant effects on detection and dynamic range.
Gaspare Galati   +3 more
doaj   +5 more sources

Extraction of black hole coalescence waveforms from noisy data

open access: yesPhysics Letters B, 2018
We describe an independent analysis of LIGO data for black hole coalescence events. Gravitational wave strain waveforms are extracted directly from the data using a filtering method that exploits the observed or expected time-dependent frequency content.
Martin A. Green, J.W. Moffat
doaj   +3 more sources

Research on computational propagation and identification of mine microseismic signals based on deep learning. [PDF]

open access: yesPLoS ONE
In the mining field, hydraulic fracturing of coal - seam boreholes generates a large number of weak microseismic signals. The accurate identification of these signals is crucial for subsequent positioning and inversion.
Dongmei Liu   +7 more
doaj   +2 more sources

Application of adaptive wavelet thresholding to recovery geoacoustic signal pulse waveforms [PDF]

open access: yesEPJ Web of Conferences, 2021
Recorded geoacoustic signals often contain noise and interference. Their appearance is caused by various reasons, e.g. of propagation environment heterogeneity, weather condition influence, human activity, etc.
Lukovenkova Olga
doaj   +1 more source

Low-PAPR Waveforms with Shaped Spectrum for Enhanced Low Probability of Intercept Noise Radars

open access: yesRemote Sensing, 2021
Noise radars employ random waveforms in their transmission as compared to traditional radars. Considered as enhanced Low Probability of Intercept (LPI) radars, they are resilient to interference and jamming and less vulnerable to adversarial exploitation
Kubilay Savci   +2 more
doaj   +1 more source

Towards full waveform ambient noise inversion [PDF]

open access: yesGeophysical Journal International, 2017
ISSN:0956 ...
Sager, Korbinian   +3 more
openaire   +2 more sources

Orthogonal waveform separation in multiple‐input and multiple‐output imaging sonar with fractional Fourier filtering

open access: yesIET Radar, Sonar & Navigation, 2021
Multiple‐input and multiple‐output (MIMO) imaging sonar can achieve high spatial resolution with a minimum number of elements and improve imaging performance.
Lu Yan, Shengchun Piao, Feng Xu
doaj   +1 more source

Denoising Effect of Jason-1 Altimeter Waveforms with Singular Spectrum Analysis: A Case Study of Modelling Mean Sea Surface Height over South China Sea

open access: yesJournal of Marine Science and Engineering, 2020
Altimeter waveforms are usually contaminated due to nonmarine surfaces or inhomogeneous sea state conditions. The present work aimed to present how the singular spectrum analysis (SSA) can be used to reduce the noise level in Jason-1 altimeter waveforms ...
Jiajia Yuan   +5 more
doaj   +1 more source

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