Improved Data Reduction for Far‐Infrared/Submillimeter Polarimetry

2005 ◽  
Vol 117 (835) ◽  
pp. 991-995 ◽  
Author(s):  
Larry Kirby ◽  
Jacqueline A. Davidson ◽  
Jessie L. Dotson ◽  
C. Darren Dowell ◽  
Roger H. Hildebrand
Keyword(s):  
Data Reduction ◽  
Far Infrared ◽  
Improved Data Reduction

scholarly journals Improved Data Reduction Techniques for the ESO CES Plus Reticon Spectra

1988 ◽  
Vol 132 ◽  
pp. 355-360
Author(s):  
B. H. Foing ◽  
L. Crivellari
Keyword(s):  
Radial Velocity ◽  
Data Reduction ◽  
Equivalent Width ◽  
Optimal Recovery ◽  
Special Care ◽  
Velocity Measurements ◽  
Reduction Techniques ◽  
Dark Counts ◽  
Improved Data Reduction

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.

scholarly journals Data reduction for the MIPS far-infrared arrays

2000 ◽  
Author(s):  
Ted Hesselroth ◽  
Eng Chong Ha ◽  
Misha Pesenson ◽  
Doug M. Kelly ◽  
G. Rivlis ◽  
...  
Keyword(s):  
Data Reduction ◽  
Far Infrared ◽  
Infrared Arrays

scholarly journals The High Resolution Far Infrared Spectrum of Diacetylene,Obtained with a Michelson Interferometer

1973 ◽  
Vol 28 (7) ◽  
pp. 1179-1185 ◽  
Author(s):  
F. Winther
Keyword(s):  
High Resolution ◽  
Infrared Spectrum ◽  
Gas Phase ◽  
Data Reduction ◽  
Path Length ◽  
Reduction Method ◽  
Variable Temperature ◽  
Michelson Interferometer ◽  
Far Infrared ◽  
Data Reduction Method

A commercial interferometer has been modified for high resolution gas phase work by addition of a variable temperature cell of 3 m path length. The data reduction method is described, and examples of the performance are given. Two rotation-vibration bands of diacetylene, ν9 and ν7-ν9, have been analyzed to yield ν9=220.139(5), ν7=482.13(1), and B0 = 0.14649(7) cm-1.

Perception-Based Data Reduction for Haptic Force-Feedback Signals Using Velocity-Adaptive Deadbands

2010 ◽  
Vol 19 (5) ◽  
pp. 450-462 ◽  
Author(s):  
Julius Kammerl ◽  
Iason Vittorias ◽  
Verena Nitsch ◽  
Eckehard Steinbach ◽  
Sandra Hirche
Keyword(s):  
Data Reduction ◽  
Haptic Perception ◽  
Force Feedback ◽  
Sampling Rate ◽  
Control Loops ◽  
High Data ◽  
Coding Scheme ◽  
End To End Delay ◽  
And Performance ◽  
Improved Data Reduction

In telepresence and teleaction (TPTA) systems, the transmission of haptic signals puts high demands on the applied signal processing and communication procedures. When running a TPTA session across a packet-based communication network (e.g., the Internet), minimizing the end-to-end delay results in packet rates of up to the applied sampling rate of the local control loops at the human system interface and the teleoperator. The perceptual deadband data reduction approach for haptic signals successfully addresses the challenge of high packet rates in networked TPTA systems and satisfies the strict delay constraints. In this paper, we extend the underlying perceptual model of the deadband approach by incorporating psychophysical findings on human force-feedback discrimination during operators' relative hand movements. By applying velocity-dependent perception thresholds to the deadband approach, we observe further improvement in efficiency and performance due to improved adaption to human haptic perception thresholds. The psychophysical experiments conducted reveal improved data reduction performance of our proposed haptic perceptual coding scheme without impairing the user experience. Our results show a high data reduction ability of up to 96% without affecting system transparency or the operator's task performance.

scholarly journals Improved data reduction for the deep-hole method of residual stress measurement

2003 ◽  
Vol 38 (1) ◽  
pp. 65-77 ◽  
Author(s):  
A. T DeWald ◽  
M. R Hill
Keyword(s):  
Residual Stress ◽  
Data Reduction ◽  
Stress Measurement ◽  
Current Method ◽  
Residual Stress Measurement ◽  
Deep Hole ◽  
Element Analysis ◽  
Residual Stress State ◽  
Improved Data Reduction ◽  
Original Component

This paper describes an improved data reduction scheme for the deep-hole method of residual stress measurement. The deep-hole method uses the changes in diameter of a reference hole, drilled through the thickness of a component, to determine residual stress. The diameter changes result from the removal of a cylindrical core from the component, where the core is larger than and concentric with the reference hole. The new data reduction seeks to determine the unknown eigenstrain distribution that gives rise to the residual stress state and to the reference hole deformations; once the eigenstrain distribution is found, it is input to an elastic finite element analysis to provide the residual stress distribution in the original component. The new data reduction relies on expressing the unknown eigenstrain field in a polynomial basis, and finding the unknown basis function amplitudes from the measured reference hole diameter changes. The new data reduction is compared with the current technique, and it is shown that the proposed scheme offers several advantages to the current method of data reduction.

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