Results 11 to 20 of about 2,996,612 (302)
Optica, 2014 We observe the rotational Doppler shift of an orbital angular momentum (OAM)-carrying white-light beam after it is backscattered from a rotating object.
M. Lavery +3 more
semanticscholar +3 more sources
Limiting Doppler Shift Effect on Cell-Free Massive MIMO Systems: A Stochastic Geometry Approach
IEEE Transactions on Wireless Communications, 2021 Cell-free (CF) massive multiple-input multiple-output (MIMO) system is currently considered as a promising network architecture to satisfy the anticipated rate requirements of beyond-5G networks.
Salah Elhoushy, W. Hamouda
semanticscholar +1 more source
Observation of the rotational Doppler shift with spatially incoherent light.
Optics Express, 2021 The rotational Doppler shift (RDS) is typically measured by illuminating a rotating target with a laser prepared in a simple, known orbital angular momentum (OAM) superposition.
A. Anderson +5 more
semanticscholar +1 more source
Multi-frequency observations of E-region HF radar aurora [PDF]
Annales Geophysicae, 2003 Multi-frequency observations of E-region coherent backscatter from decametre waves reveal that auroral echoes tend to comprise two spectral components superimposed, one at low Doppler shifts, below 250 ms-1, and the other Doppler shifted to near ...
S. E. Milan, M. Lester, N. Sato
doaj +1 more source
IEEE Photonics Journal, 2023 In this article, the wavelength division multiplexing (WDM) technology is applied to the space chaotic laser communication system. We deduce the bit error rate (BER) model of multi-channel space chaotic laser communication with Doppler frequency shift ...
Mi Li +5 more
doaj +1 more source
Journal of Marine Science and Engineering, 2021 Velocity is vital information for navigation and oceanic engineering. Coherent Doppler sonar is an accurate tool for velocity measurement, but its use is limited due to velocity ambiguity.
Peng Liu, Nobuyoshi Kouguchi, Ying Li
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Study on the Impact of the Doppler Shift for CO2 Lidar Remote Sensing
Remote Sensing, 2022 Atmospheric carbon dioxide (CO2) is recognized as the most important component of the greenhouse gases, the concentration of which has increased rapidly since the pre-industrial era due to anthropogenic emissions of greenhouse gases (GHG).
Xifeng Cao +6 more
doaj +1 more source
Leida xuebao, 2013 The active decoy jamming to SAR based on the Time-Delay Doppler-Shift (TDDS) method takes effect in certain region. Proper utilization of jamming ensuring decoy quality is based on the study of the effective region. After the mathematical analysis of the
Liu Yong-cai +3 more
doaj +1 more source
IEEE Access, 2022 Weighted fractional Fourier transform encrypted chaotic direct sequence spread spectrum (WFRFT-CD3S) signal is aperiodic and complex Gaussian distributed.
Jiangyan He +3 more
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A Doppler Shift Factor Estimation Method for High Speed Mobile Underwater Acoustic Communication [PDF]
Jisuanji gongcheng, 2016 In underwater acoustic communication systems,most of the Doppler shift factor estimation methods cannot deal with the relationship between computational complexity and estimation accuracy under high relative motion speed.In view of this,this paper ...
YANG Jie,ZHOU Shengyuan,YU Fengqi
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