2,257 resources related to Doppler shift
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ICC 2021 - IEEE International Conference on Communications
IEEE ICC is one of the two flagship IEEE conferences in the field of communications; Montreal is to host this conference in 2021. Each annual IEEE ICC conference typically attracts approximately 1,500-2,000 attendees, and will present over 1,000 research works over its duration. As well as being an opportunity to share pioneering research ideas and developments, the conference is also an excellent networking and publicity event, giving the opportunity for businesses and clients to link together, and presenting the scope for companies to publicize themselves and their products among the leaders of communications industries from all over the world.
2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting
The joint meeting is intended to provide an international forum for the exchange of information on state of the art research in the area of antennas and propagation, electromagnetic engineering and radio science
IEEE International Conference on Plasma Science (ICOPS) is an annual conference coordinated by the Plasma Science and Application Committee (PSAC) of the IEEE Nuclear & Plasma Sciences Society.
The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.
INTERMAG is the premier conference on all aspects of applied magnetism and provides a range of oral and poster presentations, invited talks and symposia, a tutorial session, and exhibits reviewing the latest developments in magnetism.
The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
Broadcast technology, including devices, equipment, techniques, and systems related to broadcast technology, including the production, distribution, transmission, and propagation aspects.
1996 8th European Signal Processing Conference (EUSIPCO 1996), 1996
The use of SATCOM systems is an essential part of today's worldwide communications. As the portion of satellite orbits in low altitudes increases, Doppler shifts often influence the received signal. Prior to the removal of this eefect, the exact course and the amount of the Doppler must be known. Therefore this paper derives the equations to calculate the orbit and ...
Radio Science, 1998
The existence of an inverse Doppler effect in free space is again scrutinized, following some papers predicting the existence of such phenomena in the near zone of a moving oscillating three-dimensional dipole. In the present paper the wave scattered from a perfectly conducting thin cylinder moving in the presence of a plane electromagnetic wave is analyzed. The response of such ...
Proceedings of GLOBECOM '95, 1995
[Proceedings] Singapore ICCS/ISITA `92, 1992
The satellite communication systems with low-altitude nongeostationary orbits have many valuable features; however, the signals suffer the effects of Doppler shift whose value and drift rate are very large compared with those in the systems with geostationary or highly elliptical orbits. The paper discusses the effects of this Doppler shift in the low-altitude orbital satellite communication systems from the viewpoint ...
IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477), 2003
Three geometries for a UHF streamflow radar system are examined: bistatic across the channel, monostatic on a bank, and monostatic in the center of the channel. The radar operates by analyzing the frequency spectrum of the received energy and determining the angles of arrival of energy at each frequency, so it is important to understand how the various geometries affect ...
Brooklyn 5G 2016: Dr. Klaus Doppler on Virtual Reality - what it takes to be present
IMS 2011 Microapps - Active and Hybrid Load Pull - A Paradigm Shift
Jaafar Elmirghani: Distinguished Experts Panel - TTM 2018
Brooklyn 5G 2016: Panel on eHealth and Virtual Reality
Fog Computing Manageability and Orchestration: How To Fuse Cloud, Network, and Fog - Marcelo Yannuzzi, Fog World Congress 2017
Advanced Simulation of Nanodevices - Luca Selmi at INC 2019
Mixed Reality - The Future of Our World
The Asian Startup Scene - Frank Levinson - IPC 2018
Toward Cognitive Integration of Prosthetic Devices - IEEE WCCI 2014
Henry I. Smith accepts the IEEE Robert N. Noyce Medal - Honors Ceremony 2017
Cafe: Cloud Appliances for Enterprises
Grid Integration Systems and Mobility with Keynote Sila Kiliccote - IEEE WIE ILC 2017
Jacquelyn Worx: Episode 2 - Interview with Carmen Fontana
Ampex VTR Milestone
Globecom 2019: Geng Wu Keynote
Historical Impact of Government Investment in High Performance Computing - Robert Leland: 2016 International Conference on Rebooting Computing
The Era of AI Hardware - 2018 IEEE Industry Summit on the Future of Computing
IEEE Green Energy Summit 2015, Panel 1: When will green become the new normal?
Mark Dehong Xu, Distinguished Lecturer
The use of SATCOM systems is an essential part of today's worldwide communications. As the portion of satellite orbits in low altitudes increases, Doppler shifts often influence the received signal. Prior to the removal of this eefect, the exact course and the amount of the Doppler must be known. Therefore this paper derives the equations to calculate the orbit and the Doppler shift and shows the behaviour and the effects caused by LEO and HEO satellites. Finally a method is proposed to compensate this influence.
The existence of an inverse Doppler effect in free space is again scrutinized, following some papers predicting the existence of such phenomena in the near zone of a moving oscillating three-dimensional dipole. In the present paper the wave scattered from a perfectly conducting thin cylinder moving in the presence of a plane electromagnetic wave is analyzed. The response of such a cylinder may be considered as due to either a two-dimensional monopole or a two-dimensional dipole in accordance with the polarization of the incident wave. An intensive numerical spectral estimation based on the fundamental definitions of the terms “frequency,” “spectrum,” and “uncertainty” is performed on the scattered wave at various ranges. An inverse Doppler effect was not found for the two-dimensional case. The same analysis was applied to the case of a moving three-dimensional radiating dipole, reconfirming previous results which showed the presence of an inverse Doppler effect in the near zone of the three-dimensional dipole.
The satellite communication systems with low-altitude nongeostationary orbits have many valuable features; however, the signals suffer the effects of Doppler shift whose value and drift rate are very large compared with those in the systems with geostationary or highly elliptical orbits. The paper discusses the effects of this Doppler shift in the low-altitude orbital satellite communication systems from the viewpoint of carrier recovery at the receivers.<<ETX>>
Three geometries for a UHF streamflow radar system are examined: bistatic across the channel, monostatic on a bank, and monostatic in the center of the channel. The radar operates by analyzing the frequency spectrum of the received energy and determining the angles of arrival of energy at each frequency, so it is important to understand how the various geometries affect the width of the frequency spectrum and its angular distribution. We argue that placing the radar and antenna on one bank, with the antennas looking broadly across the river, generally produces the best results. The broad frequency spectrum allows many points to be analyzed, most of which have single-angle direction solutions (which generally are more robust than dual- angle solutions), and all the equipment can be placed at a single location.
The paper proposes vehicular communication principles in order to increase workers and pedestrians crossroads safety at the seaport. A hybrid environment-based approach for modeling the vehicular communication channel is used. It is based on a combination of a deterministic ray-launching algorithm (PIROPA) to model large-scale parameters, and a stochastic model to obtain small-scale ones. Simulation analysis of some power-delay profiles for different workers or pedestrians and front forklifts seaport cross-roads interplays are done over the selected container and general cargo terminal area of the Port of Bar (Montenegro). The results provide good understanding of the communication requirements in order to obtain a feasible on-post safety system.
In passive radar, the receiver is limited to commercial waveforms from various emitters of opportunity. In addition, the geometry in three dimensional space between the receiver and various transmitters creates many performance considerations when applying space time adaptive processing (STAP). This paper presents the difference in signal-to-interference-plus-noise ratio (SINR) performance for different geometries using a simulated Long-Term Evolution (LTE) waveform. Overall, the out-of-plane angle and relative grazing angles greatly influence the clutter power in angle Doppler space.
Pulse compression refers to the design of a radar waveform, i.e. a “pulse compressed waveform”, so that its matched Alter response or, equivalently, its autocorrelation function (ACF), has a narrow main lobe. The narrow ACF lobe enhances the ability to resolve between closely spaced targets, i.e. good range resolution, without relying entirely on narrow pulse widths, which, at a fixed pulse amplitude, lowers the pulse energy and degrades the detection range. The appearance of sidelobes in the ACF that mask targets with low return signal power presents a challenge in the design of pulse compression waveforms. Additionally, the Doppler tolerance of pulse compression waveforms need to be examined. That is, the behavior of the sidelobe level (SLL) should be kept low to preserve good range resolution even as the velocity of the target increases. In this paper, a new pulse compression waveform called Doppler Tolerant Modified P4 Code (DTMP4 Code) is presented and analyzed. The waveform can be generated by modulating a pulse using linear frequency modulation (LFM) then applying phase coding (P4 Code) to the resulting waveform. Simulation results shows that the proposed waveform has lower average SLL than the LFM and P4 code. In addition, it is less affected by Doppler shift compared to the P4 Code.
The following are explained: (1) the measurement circuit with pulse period; (2) the method of processing the speed and acceleration by the minimum square line approximation to the period; (3) the method of fixing a parameter; (4) the numerical formula and numerical computation of the Kalman filter used to speed-up the acceleration; and (5) an example of the processing.
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