Parameterized Data Reduction Framework of Thermal Sensing for Gait Velocity Measurements

We developed routines for intensity, equivalent width, and radial velocity measurements on CES plus reticon spectra obtained with the ESO 1.4m telescope. In order to achieve the optimal recovery of the signal, the noise has to be minimized by removing any parasitical effect. Special care has been devoted to the correction for remanence effects in the reticon dark counts. Typical results are presented and discussed.

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A Note on the Estimation of Average Pressures from Instantaneous Velocities in Unsteady Flow

Journal of the Royal Aeronautical Society ◽

10.1017/s000192400005555x ◽

1967 ◽

Vol 71 (678) ◽

pp. 440-440

Author(s):

C. J. Wood

Keyword(s):

Unsteady Flow ◽

Boundary Layers ◽

Data Reduction ◽

Bluff Body ◽

Wake Vortex ◽

Two Dimensional ◽

Experimental Check ◽

Velocity Measurements ◽

Periodic Disturbance ◽

Oncoming Stream

In a recent paper, the author described some experiments in which the average base pressure on a two-dimensional bluff body was estimated from a random sample of instantaneous velocity measurements taken in the irrotational flow outside the separating boundary layers at the trailing edge. Although the oncoming stream was steady, the flow near the model was subject to a periodic disturbance emanating from the wake vortex street. An experimental check showed that the pressure estimates obtained by using the steady Bernouilli equation were reasonably accurate. This note points out that the method of data reduction used in ref. 1 is not an approximation; it is exact.

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Sound velocity measurements by the use of dynamic light scattering: data reduction by the application of a Fourier transformation

Applied Optics ◽

10.1364/ao.32.003886 ◽

1993 ◽

Vol 32 (21) ◽

pp. 3886 ◽

Cited By ~ 25

Author(s):

Kjeld Kraft ◽

Alfred Leipertz

Keyword(s):

Light Scattering ◽

Dynamic Light Scattering ◽

Sound Velocity ◽

Data Reduction ◽

Fourier Transformation ◽

Scattering Data ◽

Velocity Measurements ◽

Dynamic Light Scattering Data

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Precise Radial-velocity Measurements with a Cassegrain Spectrograph, II: Radial-velocity Determination and Applications

International Astronomical Union Colloquium ◽

10.1017/s0252921100048375 ◽

1999 ◽

Vol 170 ◽

pp. 68-72 ◽

Cited By ~ 1

Author(s):

I. V. Ilyin ◽

R. Duemmler

Keyword(s):

Radial Velocity ◽

Data Reduction ◽

High Accuracy ◽

Radial Velocities ◽

Velocity Measurements ◽

Echelle Spectrograph ◽

The Stability ◽

Stability Issues

AbstractWe present our measurements of radial velocities of two stars suspected to have a substellar companion by using observations made with a cassegrain échelle spectrograph. The stability issues and details of the data reduction are discussed in Ilyin & Duemmler (paper I, these proceedings). The results obtained here show that relatively high accuracy of radial velocity determinations is also attainable for cassegrain spectrographs.

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Laser Velocimeter Measurements in a Model Propeller Flowfield

Journal of Fluids Engineering ◽

10.1115/1.3243562 ◽

1988 ◽

Vol 110 (4) ◽

pp. 350-354 ◽

Cited By ~ 5

Author(s):

J. Lepicovsky

Keyword(s):

Data Acquisition ◽

Data Reduction ◽

Velocity Measurements ◽

Simple Experiment ◽

Reversed Flow ◽

Mean Velocity ◽

Blade Height ◽

Reduction Techniques ◽

The Mean ◽

Set Up

The objective of this work was to demonstrate the usability of a laser velocimeter data acquisition and reduction techniques for ensemble-averaged velocity measurements near and between rotating propeller or fan blades. A relatively simple experiment was set up to measure the flowfield of a two-bladed model propeller operating at static (non-flight) conditions to verify the data reduction procedures. The mean velocity and ensemble-averaged blade-to-blade velocity distributions were acquired. The experimental results, plotted in a novel consise form, showed separated and reversed flow regions on a rotating static propeller. The flowfield distortion along the blade height in the vicinity of the propeller disc was also observed.

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