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The analysis of transient Doppler frequency shift from microcavitation
IEEE 1992 Ultrasonics Symposium Proceedings, 2003By transmitting a probing wave (29.4 MHz) toward a microbubble, a transient Doppler frequency shift is observed by estimating the transient frequency of the backscattered signal. An analytical solution is obtained by modeling the scatterer as a quasi-static sphere. The model is used to explain the experimental data.
Q. Xu, R.E. Apfel
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Frequency Doubling in the X-Band Doppler Shift Experiment
American Journal of Physics, 1970An interesting extension to the conventional Doppler shift experiment is described. The basic equipment is similar to other X-band systems and is built around a 4-port directional coupler. By using a vibrating mirror in place of the normal constant velocity reflector, the output from the mixer can be observed to occur at both the expected Doppler ...
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Laser Doppler velocimeter with variable optical frequency shift
Optics & Laser Technology, 1975Abstract An opto-electronic system that allows a stable accurate frequency shift, variable from 10 kHz to 50 MHz, to be introduced in a laser Doppler velocimeter (LDV) has been developed. The system combines a fixed optical-frequency shift obtained using a Bragg cell with an electronic shift which results from mixing the detector signal with a ...
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Joint Estimation of Doppler Frequency Shift and Doppler Frequency Rate Based on Interpolation
Journal of Electronics & Information Technology, 2014Tian Le, Wei Jiang
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A nomogram for the calculation of Doppler frequency shift
Ultrasonics, 1969openaire +3 more sources
Climate change impacts on plant pathogens, food security and paths forward
Nature Reviews Microbiology, 2023Brajesh K Singh +2 more
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