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Anales (Asociación Física Argentina), 2023 In 1904, the Austrian physicist Fritz Hasenöhrl examined by means of mental experiments the black body radiation in a reflecting cavity. By calculating the work required to keep the cavity moving at constant velocity in opposition to the radiation ...
C. M. Figueroa, S. Saracho
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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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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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On Ultrasonic MTI Measurement of Velocity Profiles in Blood-Flow [PDF]
Modeling, Identification and Control, 1981 A theoretical analysis of Doppler frequency estimators proposed to be used in ultrasonic MTI measurements of velocity profiles in blood flow, is given. The estimators give an output in form of a single analogue voltage and the relation of the output to ...
Bjørn A.J. Angelsen +1 more
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Aircraft Detection Using Phase-Sensitive Optical-Fiber OTDR
Sensors, 2021 Aircraft detection plays a vital role in aviation management and safe operation in the aviation system. Phase-Sensitive Optical Time Domain Reflectometry (Φ-OTDR) technology is a prevailing sensing method in geophysics research, structure inspection ...
Yunpeng Cai +4 more
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International Archives of Otorhinolaryngology, 2013 Sumarry Introduction: Spinocerebellar ataxia (SCA) is a degenerative disease that can cause loss of coordination of voluntary muscle movement such as that required for swallowing.
Edna Márcia da Silva Abdulmassih +2 more
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Simple Experiment of Doppler Effect Using Smartphone Microfon Sensor
Jurnal Penelitian Fisika dan Aplikasinya, 2020 Doppler effect is the physical phenomena in which the emitted frequency is a source of change at a time when accepted by the detector due to relative movement of the detector towards the source of the wave or vice versa.
Adam Malik +4 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 ...
Deng, Junhong +3 more
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Optimal nonlinear filtering of MPSK signals in the presence of a Doppler frequency shift
Российский технологический журнал, 2022 Objectives. Phase-shift keyed (PSK) signals are widely used in many telecommunication, communication, and cellular information transmission systems. Phase-shift keying provides a higher noise immunity than amplitude and frequency modulations do.
G. V. Kulikov, T. T. Do, R. R. Usmanov
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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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