Results 41 to 50 of about 4,561,256 (335)

A Hybrid Localization Algorithm Based on Doppler Shift and AOA for an Underwater Mobile Node

open access: yesIEEE Access, 2020
To solve the problem of low accuracy of a mobile node localization in an underwater sensor network, this article proposes a hybrid localization algorithm based on Doppler shift and angle of arrival (AOA) for the underwater mobile node (DAHL).
Kun Hao   +3 more
semanticscholar   +1 more source

Einstein Shift and Doppler Shift [PDF]

open access: yesNature, 1926
IN answer to Sir Oliver Lodge's question (NATURE, December 26, p. 938), it depends on our point of view whether the Einstein shift is considered to be imposed on the light at its origin or in course of transit to us. We cannot state the frequency of the ether vibrations without presupposing a system of time-reckoning, and in the non-Euclidean region ...
openaire   +1 more source

The development of an ultrasonic Doppler bed-load velocimeter [PDF]

open access: yes, 1989
Includes bibliography.A instrument has been developed for measuring the velocity of solid particles adjacent to the pipe wall in a solids-liquid pipeline.
Lazarus, Mark Doron
core   +1 more source

Single camera three component planar velocity measurements, using two frequency Planar Doppler Velocimetry (2v-PDV) (2005) [PDF]

open access: yes, 2005
The work presented here describes a method that allows three component velocity measurements to be made, quickly and non-intrusively, across a plane in a flow defined by a laser light sheet. The method, two frequency planar Doppler Velocimetry (2v-PDV)
Charrett, Thomas O. H.   +5 more
core   +1 more source

Doppler shift satellite navigation - NAVSAT-TRANSIT and adherents [PDF]

open access: yes, 2013
Short article dissertates about Satellite navigation systems based on Doppler shift. Discussed are advantages and disadvantages of such systems especially in connection with aviation. In last part are mentioned nowadays satellite navigation systems based
Hospodka, Jakub
core   +1 more source

A Novel Waveform Design Method for Shift-Frequency Jamming Confirmation

open access: yesInternational Journal of Antennas and Propagation, 2018
Shift-frequency jamming is generally used to form range false targets for ground-based early-warning radar systems; the frequency shift value of such interference is larger than the Doppler shift value of the moving target, and the key element to ...
Chang Zhou, Zhen-Bo Zhu, Zi-Yue Tang
doaj   +1 more source

Rancang Bangun Doppler X-Band Speed Detector untuk Kendaraan Roda Dua pada Jalan Kelas IIIC

open access: yesJurnal Elkomika, 2023
ABSTRAK Jalan kelas IIIC memiliki struktur yang lebih sempit dan biasanya dibangun didekat permukiman penduduk untuk penggunaan pejalan kaki. Selain pejalan kaki, kendaraan motor roda dua juga dapat mempergunakaan jalan tersebut.
TEGUH FIRMANSYAH   +6 more
doaj   +1 more source

Foraging behavior and Doppler shift compensation in echolocating hipposiderid bats, I-Iipposideros bicolor and I-Iipposideros speoris [PDF]

open access: yes, 1984
1. Two hipposiderid bats,H. bicolor andH. speoris, were observed in their natural foraging areas in Madurai (South India). Both species hunt close together near the foliage of trees and bushes but they differ in fine structure of preferred hunting space:
Schuller, Gerd   +2 more
core   +1 more source

Probabilistic modelling of bistatic Doppler shift

open access: yes, 2022
S.348-352The bistatic Doppler shift depends irreducibly on target position and velocity. This fact renders intractable an analytical assessment of the radar's global ability to counter stationary clutter.
Dommermuth, F.
core   +1 more source

Laryngeal Nerve Activity During Pulse Emission in the CF-FM Bat, Rhinolophus ferrumequinum. I. Superior Laryngeal Nerve (External Motor Branch) [PDF]

open access: yes, 1981
The activity of the external (motor) branch of the superior laryngeal nerve (SLN), innervating the cricothyroid muscle, was recorded in the greater horseshoe bat,Rhinolophus ferrumequinum.
Rübsamen, R., Schuller, Gerd
core   +1 more source

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