Spatiotemporal Acoustic Communication by a Single Sensor via Rotational Doppler Effect
Sign Up to like & getrecommendations! Published in 2023 at "Advanced Science"
DOI: 10.1002/advs.202206619
Abstract: A longstanding pursuit in information communication is to increase transmission capacity and accuracy, with multiplexing technology playing as a promising solution. To overcome the challenges of limited spatial information density and systematic complexity in acoustic… read more here.
Keywords: single sensor; rotational doppler; communication; doppler effect ... See more keywords
The Doppler effect is the same for both optics and acoustics
Sign Up to like & getrecommendations! Published in 2021 at "Optik"
DOI: 10.1016/j.ijleo.2021.167565
Abstract: Abstract According to modern physics, there are three main differences between the Doppler effect in optics and the Doppler effect in acoustics: (i) difference in which relative velocity is more important; (ii) difference in the… read more here.
Keywords: doppler effect; optics acoustics; effect optics; acoustics ... See more keywords
Analysis of rotational Doppler effect based on radio waves carrying orbital angular momentum
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5050448
Abstract: The electromagnetic beam carrying orbital angular momentum (OAM) has a twisted phase front, which can induce a rotational Doppler frequency shift when it is illuminating on a spinning object. In this paper, the rotational Doppler… read more here.
Keywords: doppler effect; rotational doppler; radio; doppler ... See more keywords
Efficient Approach to Decoupled Localization for Noncircular Sources in the Presence of Doppler Effect
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DOI: 10.1109/access.2022.3170840
Abstract: Direction estimation in the presence of the Doppler effect can be carried out according to the maximum likelihood principle, which requires solving a nonlinear multidimensional problem. A complex multidimensional problem can be transformed into simple… read more here.
Keywords: noncircular sources; doppler; presence doppler; doppler effect ... See more keywords
Precession Parameter Estimation of Warhead With Fins Based on Micro-Doppler Effect and Radar Network
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Aerospace and Electronic Systems"
DOI: 10.1109/taes.2022.3182635
Abstract: Precession is a typical micromotion of a ballistic missile warhead in the middle of the trajectory. The modulation of the narrow-band radar echo by the precession warhead is mainly reflected in the micro-Doppler effect, which… read more here.
Keywords: micro doppler; precession; warhead; doppler effect ... See more keywords
A Doppler Effect Based Framework for Wi-Fi Signal Tracking in Search and Rescue Operations
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Vehicular Technology"
DOI: 10.1109/tvt.2017.2752766
Abstract: We consider rescue missions in postdisaster scenarios with particularly difficult environments where no infrastructure is available. Given the increasing popularity of smartphones and wearable devices, this paper proposes a rescue system which uses the Doppler… read more here.
Keywords: doppler effect; rescue; system; search rescue ... See more keywords
Acoustic topological beam nonreciprocity via the rotational Doppler effect
Sign Up to like & getrecommendations! Published in 2022 at "Science Advances"
DOI: 10.1126/sciadv.abq4451
Abstract: Reciprocity is a fundamental principle of wave physics related to time-reversal symmetry. Nonreciprocal wave behaviors have been pursued for decades because of their great scientific significance and tremendous potential applications. However, nonreciprocity devices have been… read more here.
Keywords: beam; doppler effect; rotational doppler; nonreciprocity ... See more keywords
Direction-sensitive rotational speed measurement based on the rotational Doppler effect of cylindrical vector beams.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.471059
Abstract: The Doppler effect has inspired numerous applications since its discovery, initially enabling measurement of the relative velocity between a moving object and a wave source. In recent years, it has been found that scalar vortex… read more here.
Keywords: cylindrical vector; rotational doppler; doppler effect; direction ... See more keywords
Design and experimental demonstration of Doppler cloak from spatiotemporally modulated metamaterials based on rotational Doppler effect.
Sign Up to like & getrecommendations! Published in 2020 at "Optics express"
DOI: 10.1364/oe.382700
Abstract: Recently, spatiotemporally modulated metamaterial has been theoretically demonstrated for the design of Doppler cloak, a technique used to cloak the motion of moving objects from the observer by compensating for the Doppler shift. Linear Doppler… read more here.
Keywords: cloak; doppler effect; rotational doppler; doppler ... See more keywords
Rotational Doppler effect detection by LG beams with a nonzero radial index.
Sign Up to like & getrecommendations! Published in 2021 at "Optics express"
DOI: 10.1364/oe.421705
Abstract: The capability to detect the rotational speed of non-cooperative targets in a long distance is a difficult problem to be solved. In recent years, vortex light provides a feasible solution for the measurement of rotational… read more here.
Keywords: radial index; nonzero radial; doppler effect; rotational doppler ... See more keywords
Fragmental optical vortex for the detection of rotating object based on the rotational Doppler effect.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.476870
Abstract: Rotational Doppler effect (RDE), as a counterpart of the conventional linear Doppler effect in the rotating frame, has attracted increasing attention in recent years on rotational object detection. Many previous works have investigated the RDE… read more here.
Keywords: optical vortex; vortex; rotational doppler; doppler effect ... See more keywords