| 1. | A laser to measure noise - Zoom in the Lab |
| | Laser Doppler Velocimetry (LDV).... In the same way that radars monitor our speed on roads : thanks to the Doppler effect.... |
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| 2. | Propulsion aérobie et autres systèmes énergétiques - moyens d'essais - Offre technologique Onera |
| | Laser Doppler Velocimetry (LDV) ,... Measurements of size and speed of particles by technique Phase Doppler (PDPA) and Electrical Low Pressure Impactor (ELPI)... |
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| 3. | Doopler Global Velocimetry - ONERA's Science Pictures |
| | DGV, Doppler Global Velocimetry or the photography of velocity by laser... Doppler Global Velocimetry is used to measure the velocity of flow at each point of a plane, illuminated by laser.... This image was obtained while developing the Doppler Global Velocimetry technique (DGV).... This is what we call the " Doppler effect ".... |
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| 4. | Air-Breathing Propulsion and Other Energetic Systems : Testing Facilities - Onera's Technological Offer |
| | Laser Doppler Velocimetry (LDV) ,... Measurements of size and speed of particles by technique Phase Doppler (PDPA) and Electrical Low Pressure Impactor (ELPI)... |
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| 5. | Aero-Thermo-Acoustic Bench (B2A) : Liners Absorption Performance Measurements - Onera's Technological Offer |
| | Measurement of normal acoustic impedance and absorbed power of flat porous materials (liners) with grazing flow by a non intrusive measurement technique (Laser Doppler Velocimetry).... |
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| 6. | Thales and ONERA sign cooperation agreement on new surface wave radar |
| | " If a wind turbine is located less then 30 kilometers from a weather radar, the wind speed measurement by the radar, based on the Doppler * effect, can be altered, " explains Gérard Bobillot, engineer at Onera.... At the same time, radar manufacturers are developing signal treatment methods (also an area of expertise at Onera) to compensate for the effects of wind turbines. * The Doppler effect is the change in frequency of a wave for an observer moving relative to the source of the wave.... |
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| 7. | ONERA - Aerodynamics and Energetics Modeling (DMAE) - Facilities |
| | For the experimental studies, the DMAE can call on around fifteen installations equipped with advanced diagnostic equipment (laser velocimetry, infrared cameras, phase Doppler particle analyzer, fast video, image display and processing methods) :... |
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| 8. | Lille Water Tunnels - ONERA / DAAP-EN |
| | Laser Doppler velocimetry, holographic velocimetry... |
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| 9. | Radars (RAD2) |
| | The Doppler effect makes it apparently taking a turn at 40mph across the fields !... Their apparent positions, however, are shifted away from the real positions as a consequence of the frequency alteration of their echoes (Doppler effect) due to their proper speed.... The reason is that the computation of the images is based on the sorting of the echoes according to their Doppler frequency shifts under the natural " hypothesis " that the ground is motionless.... |
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| 10. | Radars (RAD2) |
| | A small utility car in motion along a runtrack :The Doppler effect makes it apparently taking a turn at 40mph across the fields !. Similar activities. |
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