Results 21 to 30 of about 105,814 (313)
Lightweight and secure vehicle track verification scheme via broadcast communication channels
网络与信息安全学报, 2023 In intelligent transportation systems, it is crucial for smart vehicles to broadcast real-time vehicle track messages to coordinate driving decisions and ensure driving safety.However, attackers can manipulate vehicle tracks by modifying timestamps or ...
Zhiqiang NING, Yuanyuan WANG, Chi ZHANG, Lingbo WEI, Nenghai YU, Yue HAO
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Modeling of Monopulse Radar Signals Reflected from Ground Clutter in a Time Domain Considering Doppler Effects [PDF]
Journal of Electromagnetic Engineering and Science, 2020 To evaluate the performance of a monopulse radar system, it is necessary to accurately model radar return signals from the ground surface in a time domain.
Jeong-Hun Nam +4 more
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Guidelines for ultrasound examination in ophthalmology. Part III: Color Doppler ultrasonography
Journal of Ultrasonography, 2019 The aim of this article was to present the possibilities of use and application of color-coded Doppler ultrasonography in the diagnosis of various diseases of the eyeball and orbit which result from vascular disorders. Color-coded Doppler ultrasonography
Monika Modrzejewska
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Performance Evaluation of OTFS-NOMA Scheme for High Mobility Users
Sakarya University Journal of Computer and Information Sciences, 2023 Orthogonal Time Frequency Space (OTFS) is a promising approach which is widely employed in sixth generation (6G) wireless network systems. Because of its superior performance in high-mobility environments, OTFS modulation has received a lot of attention ...
Arif Başgümüş +2 more
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Cascaded rotational Doppler effect [PDF]
Optics Letters, 2019 We propose and substantiate experimentally the cascaded rotational Doppler effect for interactions of spinning objects with light carrying angular momentum. Based on the law of parity conservation for electromagnetic interactions, we reveal that the frequency shift can be doubled through cascading two rotational Doppler processes which are mirror ...
Wei Liu +3 more
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Sound and Light Doppler Effects [PDF]
SSRN Electronic Journal, 2022 20 pages, 13 figures, 2 ...
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Performance analysis of DSSS- and CSS-based physical layer for IoT transmission over LEO satellites
ETRI Journal, 2022 To determine a suitable waveform for Internet of Things (IoT) transmission over low-Earth orbit (LEO) satellites, this paper reports the results of a performance comparison between chirp spread spectrum (CSS)-based LoRa and direct sequence spread ...
Sooyeob Jung +5 more
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High-sensitive acquisition method of GPS signal based on iridium assistance
The Journal of Engineering, 2019 Global positioning system (GPS) signal is severely attenuated in indoor, urban, and forest environments. To capture weak GPS signal, long-time coherent integration and non-coherent integration are used to increase signal to noise ratio (SNR).
Hao Zihuan, Zhang Lei
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The Maximum Doppler Effect [PDF]
Journal of Nuclear Science and Technology, 1967 The maximum numerical values of the Doppler coefficient of a single Breit Wigner resonance and the dilutions for which the stationary values occur have been found as a function of temperature. The results are tabulated in terms of parameters which are independent of the particular resonance and model.
T. S. Horner, A. Keane
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