Results 41 to 50 of about 114,029 (207)
From Modeling to Sensing of Micro-Doppler in Radio Communications
Remote Sensing, 2022 The Doppler effect in radio systems has been widely explored by the radio communication community. However, these studies have been limited to simple motion such as linear translation.
Louis Morge-Rollet +4 more
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Open Physics, 2021 In a microscopic model of the photoelectric effect, it becomes clear that the conservation of energy is exclusively determined by Doppler shift processes, i.e., the whole energy of the photon vanishes by means of Doppler redshifts.
Schultheiss Christoph
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IDENTIFICATION OF AIR RADAR TARGETS USING THE DOPPLER EFFECT FROM A HEATED JET ENGINE
Вестник Дагестанского государственного технического университета: Технические науки, 2018 Objectives The aim of the study is to develop a methodology for identifyingaircraft by the deflections of an electromagnetic radar beam by a heated jet engine. Methods Atoms of the crystal lattice of the metallic parts of the operating jet engine will be
P. Sh. Adalaeva +3 more
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A New Approach for Testing Fetal Heart Rate Monitors
Sensors, 2020 In this paper, a new approach for the periodical testing and the functionality evaluation of a fetal heart rate monitor device based on ultrasound principle is proposed.
Daniele Bibbo +10 more
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Известия высших учебных заведений России: Радиоэлектроника, 2018 Narrowband approximation of Doppler effect by a frequency shift is inappropriate for some problems of radiolocation, hydro acoustics or passive location.
I. V. Gogolev
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A Theoretical-Study of the Scattering of Ultrasound from Blood [PDF]
Modeling, Identification and Control, 1981 A theoretical treatment of the scattering of ultrasound from blood is given, assuming that the blood behaves essentially as a continuum. The scattering then arises from fluctuations in the mass density and compressibility of the blood, which is caused by
Bjørn A.J. Angelsen
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A 3D Time-Variant Non-Stationary Hybrid Channel Model for Massive MIMO Systems
International Journal of Information and Communication Technology Research, 2019 This paper presents a novel three-dimensional (3D) time-variant hybrid channel model for massive multiple input multiple output (M-MIMO) wireless systems.
Mohammad Mehdi Tamaddondar
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FREQUENCY DISCRIMINATOR FOR AIRCRAFT RADIONAVIGATION DOPPLER SYSTEM BASED ON MICROCONTROLLER
Измерение, мониторинг, управление, контроль, 2021 Background. The object of the study is an aircraft radio navigation system. The subject of this research is the methodology for constructing an airborne radio navigation system based on the Doppler effect.
I.V. Aksenov, V.M. Chaikovsky
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Journal of the Practice of Cardiovascular Sciences, 2019 CA Doppler described the doppler effect which was a shift in the frequency of light. This theory was later used for multiple applications in electromagnetics, astronomy, physics, aviation and health sciences.
Shivani Vashistha, Soumi Das
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ADCP Discharge Measurements on the River Danube: Post-Processing and Correction of Data
Slovak Journal of Civil Engineering, 2019 Accurate measurements and analyses of river discharges are one of the key tasks of hydrology. Nowadays, the traditional methods of discharge measurements are being supplemented or even replaced by novel approaches that utilize state-of-the-art ...
Výleta Roman, Valent Peter
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