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
doaj +1 more source
Micro-Doppler Effect and Sparse Representation Analysis of Underwater Targets. [PDF]
Sensors (Basel), 2023 Lu Y, Kou S, Wang X.
europepmc +1 more source
Rotational Doppler cooling and heating [PDF]
arXiv, 2019 Doppler cooling is a widely used technique to laser cool atoms and nanoparticles exploiting the Doppler shift involved in translational transformations. The rotational Doppler effect arising from rotational coordinate transformations should similarly enable optical manipulations of the rotational degrees of freedom in rotating nanosystems.
arxiv
Doppler Effect Reduction in an OFDM System Thanks to Massive MIMO
IEEE Access, 2018 Among many challenges, 5G should improve the quality of service for moving users. In such a mobility context, the Doppler effect creates interference which can severely damage the performance of the systems.
Alexis Bazin, B. Jahan, M. Hélard
semanticscholar +1 more source
Doppler effects in a left-handed material: a first-principle theoretical study [PDF]
arXiv, 2004 The Doppler effects for the reflected wave from a moving media are systemically analyzed in this paper. The theoretical formula for the Doppler shift in the left-handed material, which is described by Drude's dispersion model, is presented. This formula is examined by first-principles numerical experiments, which are in agreement with the theoretical ...
arxiv
Doppler effect in vacuum and medium in X-ray range [PDF]
Nuclear Instruments and Methods A 1072 (2025) 170235This paper discusses the Doppler effect for radiation emitted by a relativistic oscillator in vacuum described geometrically as an ellipsoid in momentum space. Spectral and angular properties of the Doppler X-ray radiation emitted by a relativistic oscillator moving through a homogeneous medium are considered.
arxiv +1 more source
Tailoring bubble size through acoustic‐assisted microbubble generation
AIChE Journal, EarlyView.Abstract Various bubble generation methods have been developed to produce microbubbles, but current techniques are inadequate for meeting industrial demands for controlling the size of microbubbles accurately. This study aimed to investigate acoustic bubble generation as a potential solution to the demand.
Min Uk Jung +3 more
wiley +1 more source
Study of frequency band in Von Karman excitation of Francis turbine
Journal of Fluid Science and TechnologyThe objective of this study is to reveal the frequency characteristics caused by Von Karman excitation observed at the stationary field of a Francis turbine.
Takero MUKAI +2 more
doaj +1 more source
Rotating axis measurement based on rotational Doppler effect of spliced superposed optical vortex. [PDF]
Nanophotonics, 2023 Zhu X +7 more
europepmc +1 more source
Mesenteric thrombosis: An unusual complication of severe acute pancreatitis—Report of two cases
Advances in Digestive Medicine, EarlyView.Abstract The incidence of acute pancreatitis is 34 per 100 000 people in the general population and is on the rise. Approximately 15% to 20% of all patients experience severe pancreatitis, with a mortality rate nearing 20%. This condition is often linked to vascular complications, although mesenteric thrombosis is a rare presentation.
Asya Zubillaga‐Mares +5 more
wiley +1 more source