Results 61 to 70 of about 9,652,403 (175)

MEASUREMENT OF THICKNESSES OF OPTICALLY TRANSPARENT LAYERED STRUCTURES BY THE SPECTRAL INTERFEROMETRY METHOD [PDF]

open access: yesРадиофизика и электроника, 2017
The results of applying the method of spectral interferometry in optical band for measuring the thicknesses of thin films are presented in this paper. We have analyzed analytically and experimentally the spectrum of the total radiation at the output of ...
K. A. Lukin   +3 more
doaj   +1 more source

CLEAN deconvolution for sidelobe suppression in random noise radar

open access: yes, 2008
Copyright © 2008 IEEEThe term random noise radar (RNR) refers to a class of radar using random noise as its transmitted signal. Noise waveforms have proven useful in a number of radar applications; however, dynamic range performance suffers due to high ...
D.A. Gray, R. D. Fry, Fry, R., Gray, D.
core   +1 more source

Direction detector for distributed targets in unknown noise and interference [PDF]

open access: yes, 2013
Adaptive detection of distributed radar targets in homogeneous Gaussian noise plus subspace interference is addressed. It is assumed that the actual steering vectors lie along a fixed and unknown direction of a preassigned and known subspace, while ...
Bandiera, Francesco   +3 more
core   +1 more source

Non-Contact Vital Signs Monitoring of Dog and Cat Using a UWB Radar

open access: yesAnimals, 2020
As pets are considered members of the family, their health has received widespread attention. Since pets cannot talk and complain when they feel uncomfortable, monitoring vital signs becomes very helpful in disease detection, as well as observing their ...
Pengfei Wang   +8 more
doaj   +1 more source

Radar based full body screening of passengers with constant motion

open access: yes, 2022
Art. 83610CThis paper presents a rotating W band radar performing a full body scan of persons which are moving with constant speed below the radar. The radar consists of a FMCW module sweeping the frequency between 96 GHz and 99 GHz by a varactor tuned ...
Hantscher, S.   +5 more
core   +1 more source

Machine Learning Doppler‐Tolerant One‐Bit Radar Detectors

open access: yesIET Radar, Sonar & Navigation
Doppler‐tolerant waveforms are some of the most common radar waveforms used in practice. However, their deterministic and repetitive nature impedes control of mutual interference when multiple radars operate in close proximity. Noise radar technology may
Kyle P. Wensell   +7 more
doaj   +1 more source

DATA ACQUISITION AND MULTITHREAD PROCESSING IN STEPPED-FREQUENCY NOISE GROUND-BASED SAR FOR 2D REAL-TIME IMAGING [PDF]

open access: yesRadio Physics and Radio Astronomy
Subject and Purpose. In the paper, the real-time operation of the data acquisition (DAQ) system for stepped-frequency noise ground-based Synthetic Aperture Radar (SAR) is described with an emphasis on DAQ system characteristics and software in an effort ...
K. Lukin   +4 more
doaj   +1 more source

Radar near-field sensing using metasurface for biomedical applications

open access: yesCommunications Engineering
Metasurfaces, promising technology exemplified by their precise manipulation of incident wave properties and exquisite control over electromagnetic field propagation, offer unparalleled benefits when integrated into radar systems, providing higher ...
Mohammad Omid Bagheri   +4 more
doaj   +1 more source

Enhanced range doppler mapping algorithm for passive GNSS based radar aerial target detection

open access: yesScientific Reports
Using GNSS (Global Navigation Satellite System) signal as signal source and applying the principle of radar for object detection is a non-contact and emerging object detection technology.
Zhuxian Zhang   +4 more
doaj   +1 more source

Detection and Estimation of Abrupt Changes contaminated by Multiplicative Gaussian Noise [PDF]

open access: yes, 1998
The problem of abrupt change detection has received much attention in the literature. The Neyman Pearson detector can be derived and yields the well-known CUSUM algorithm, when the abrupt change is contaminated by an additive noise.
Jean-Yves Tourneret   +1 more
core   +1 more source

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