Results 11 to 20 of about 105,814 (313)
On the symmetries of electrodynamic interactions
Science & Philosophy, 2022 While mechanics was developed under the idea of reciprocal action (interactions), electromagnetism, as we know it today, takes a form more akin to unilateral action.
Hernán Gustavo Solari +1 more
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Science & Philosophy, 2023 Christian Doppler, an Austrian physicist, described in 1842 the apparent change in frequency of a wave when motion of the source or the observer is involved. Named after him, this change in observational frequencies is known as the Doppler Effect.
Denis Thomas
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Metrology and Measurement Systems, 2020 The possibilities to improve values of the satellite orbit elements by employing the pseudo-ranges and differences of carrier phase frequencies measured at many reference GPS stations are analysed. An improvement of orbit ephemeris is achieved by solving
Skeivalas Jonas +3 more
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Robust method for ship recognition based on ISAR imaging using 3D model
The Journal of Engineering, 2019 This study develops a robust method for ship target recognition, based on inverse synthetic aperture radar (ISAR) image matching with the template of 3D model.
Sudao D. Xie, M.Y. Pan, D.S. Li
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Moving target detection based on velocity compensation methods in a coherent continuous wave lidar
The Journal of Engineering, 2019 Light Detection and Ranging (lidar) technology has been applied in military and civil areas and shows great potential. However, in coherent lidar detection, significant Doppler Effect and velocity uncertainty result a bad influence on moving target ...
Huixin Huang +3 more
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地震科学进展, 2021 A magnitude M7.8 earthquake struck Kermadec Island，New Zealand on March 5，2021. In this study we determined surface wave magnitude using 692 stations from USGS global networks and 112 stations from China global earthquake monitoring system，then analyzed ...
Wenze Deng
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Open Physics, 2021 In a microscopic model of the photoelectric effect, it becomes clear that the conservation of energy is exclusively determined by Doppler shift processes, i.e., the whole energy of the photon vanishes by means of Doppler redshifts.
Schultheiss Christoph
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Non-invasive Ultrasound Doppler Effect Based Method of Liquid Flow Velocity Estimation in Pipe [PDF]
Archives of Acoustics, 2023 This paper discusses the estimation of flow velocity from a multi-sensor scenario. Different estimation methods were used, which allow the effective measurement of the actual Doppler shift in a noisy environment, such as water with air bubbles, and on ...
Pawel Biernacki +2 more
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Nihon Kikai Gakkai ronbunshu, 2021 The variation of the noise metrics of a group of sound sources due to its movement at a constant velocity along a straight track is discussed in the paper.
Yusuke MAKINO, Yasushi TAKANO
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The Evaluation of Light Conditions Influence and Corrections upon Doppler Blood Perfusion Imagining
Advances in Electrical and Electronic Engineering, 2016 The paper deals with theoretical and experimental research of the ambient light influence upon the measuring reliability of the perfusion maps by the laser Doppler method using the device PeriScan PIM 3.
Jan Kubicek +4 more
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