Results 41 to 50 of about 19,053 (161)

Noise Suppression in 94 GHz Radar-Detected Speech Based on Perceptual Wavelet Packet

open access: yesEntropy, 2016
A millimeter wave (MMW) radar sensor is employed in our laboratory to detect human speech because it provides a new non-contact speech acquisition method that is suitable for various applications. However, the speech detected by the radar sensor is often
Fuming Chen   +6 more
doaj   +1 more source

Characterizing Phase Noise in Radar

open access: yes, 2023
<p>There is some confusion in the radar community on the handling of phase noise in radar because current definitions give rise to divergent integrals. </p> <p>It is shown that the spectrum of a phase noise modulated signal rather than the spectrum of the phase noise modulating function is the applicable function for coherent radar ...
PW Van Der Walt, Werner Steyn
openaire   +1 more source

Artificial Intelligence applications in Noise Radar Technology

open access: yesIET Radar, Sonar & Navigation
Radar systems are a topic of great interest, especially due to their extensive range of applications and ability to operate in all weather conditions. Modern radars have high requirements such as its resolution, accuracy and robustness, depending on the ...
Afonso L. Sénica   +2 more
doaj   +1 more source

1D Convolutional Neural Networks Versus Automatic Classifiers for Known LPI Radar Signals Under White Gaussian Noise

open access: yesIEEE Access, 2020
In this study we analyze the signal classification performances of various classifiers for deterministic signals under the additive White Gaussian Noise (WGN) in a wide range of signal to noise ratio (SNR) levels (-40dB to +20dB).
Alper Yildirim, Serkan Kiranyaz
doaj   +1 more source

Statistical Angular Resolution Limit for Ultrawideband MIMO Noise Radar

open access: yesInternational Journal of Antennas and Propagation, 2015
The two-dimensional angular resolution limit (ARL) of elevation and azimuth for MIMO radar with ultrawideband (UWB) noise waveforms is investigated using statistical resolution theory.
Xiaoli Zhou   +4 more
doaj   +1 more source

Robustification of noise radar detection

open access: yesIET Radar, Sonar & Navigation, 2008
A study of robust detection scheme for continuous wave noise radars is presented. The probability density function (PDF) of the noise at the input of the radar is not usually Gaussian and has heavy tails generated by impulse interferences. Although the PDF of interferences at the output of the noise radar correlator is Gaussian, impulse interferences ...
K. Kulpa, Z. Gajo, M. Malanowski
openaire   +1 more source

A Study on the Enhancement of Detection Performance of Space

open access: yesJournal of Astronomy and Space Sciences, 2018
Radar sensors are used for space situational awareness (SSA) to determine collision risk and detect re-entry of space objects. The capability of SSA radar system includes radar sensitivity such as the detectable radar cross-section as a function of ...
Eun-Jung Choi   +6 more
doaj   +1 more source

Error Analysis of Radar Coincidence Imaging in the Presence of Noise

open access: yesLeida xuebao, 2014
Radar coincidence imaging is a new method for high-resolution staring imaging. First, the mathematical model is constructed. Second, the theoretical error for radar coincidence imaging in the presence of noise is derived using the parametric imaging ...
Dai Qiang   +4 more
doaj   +1 more source

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