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1. www.mathworks.com › help › satcomCalculate Latency and Doppler in a Satellite Scenario

   www.mathworks.com › help › satcom

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   This example shows how to model a GPS satellite constellation from a SEM almanac, analyze access between the satellites and a ground station, and calculate the latency and the Doppler shift between the satellites and the ground station.

2. sonographyminutes.com › essential-ultrasound-controls-and-how-to-use-them-part-3Essential Ultrasound Controls And How To Use Them: Part 3

   sonographyminutes.com › essential-ultrasound-controls-and-how-to-use-them-part-3

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   14 Ιαν 2022 · Doppler is a tool that measures either the strength of a Doppler signal or a shift in it’s frequency, which allows us to interrogate blood flow patterns within the body on Ultrasound.

3. journals.sagepub.com › doi › fullBasics for performing a high-quality color Doppler sonography of...

   journals.sagepub.com › doi › full

   28 Ιουλ 2021 · Basic concepts on the Doppler shift equation, angle correction, settings on pulse repetition frequency, operative Doppler frequency, gain are reported to ensure adequate and correct sampling of blood flow velocity.

4. fetalmedicine.org › var › uploadsDoppler Ultrasound - Principles and practice - Fetal Medicine

   fetalmedicine.org › var › uploads

   Doppler ultrasound measures the movement of the scatterers through the beam as a phase change in the received signal. The resulting Doppler frequency can be used to measure velocity if the beam/flow angle is known.

5. www.ncbi.nlm.nih.gov › books › NBK580539Sonography Doppler Flow Imaging Instrumentation - StatPearls -...

   www.ncbi.nlm.nih.gov › books › NBK580539

   1 Μαΐ 2023 · In color and PW Doppler modes, it can be helpful to filter out low-level frequency shifts that can occur due to the movement of soft tissue/vessel walls to reduce noise on Doppler interrogation. The wall filter can be adjusted to remove these low-velocity signals in post-processing.

6. www.mathworks.com › help › phasedDoppler Shift and Pulse-Doppler Processing - MATLAB & Simulink -...

   www.mathworks.com › help › phased

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   Doppler Shift and Pulse-Doppler Processing Support for Pulse-Doppler Processing. Relative motion between a signal source and a receiver produces shifts in the frequency of the received waveform. Measuring this Doppler shift provides an estimate of the relative radial velocity of a moving target.

7. pubs.rsna.org › doi › fullOptimizing Image Quality When Evaluating Blood Flow at Doppler...

   pubs.rsna.org › doi › full

   9 Αυγ 2019 · Working knowledge of techniques for optimizing images at Doppler US, including extraction of accurate vascular flow information, and recognition of related potential errors and artifacts are essential for accurate diagnosis and management of vascular disease.