Analysis of tolerances in a grating interferometer for high-resolution displacement measurement

1999 ◽  
Author(s):  
Marek Dobosz
Keyword(s):  
High Resolution ◽  
Displacement Measurement ◽  
Grating Interferometer

The Heights of Solar Radio Sources at 1424 MHz and 696 MHz

1969 ◽  
Vol 1 (5) ◽  
pp. 192-194 ◽  
Author(s):  
D. G. Cole ◽  
R. F. Mullaly
Keyword(s):  
Solar Activity ◽  
High Resolution ◽  
Solar Disk ◽  
Previous Investigation ◽  
Solar Radio ◽  
Radio Sources ◽  
Grating Interferometer ◽  
Maximum Solar Activity

The heights of solar radio sources at 1424 MHz and 696 MHz have been measured during the years 1965 and 1966. Solar activity at this time was near minimum. The number of radio sources appearing on the solar disk rarely exceeded three at any time and it thus was possible to resolve the majority of these with a high resolution grating interferometer. Many of the previous height measurements at these frequencies have been made near times of maximum solar activity and the confusion of sources within the beam has limited their accuracy. The number of sources studied here is quite considerably higher than in any previous investigation at these frequencies, and the period of observation has been continuous.

scholarly journals The Radio Brightness Distribution on the Sun at 21 cm from Combined Eclipse and Pencil?Beam Observations

1961 ◽  
Vol 14 (3) ◽  
pp. 403 ◽  
Author(s):  
T Krishnan ◽  
NR Labrum
Keyword(s):  
High Resolution ◽  
High Sensitivity ◽  
Brightness Distribution ◽  
Pencil Beam ◽  
The Sun ◽  
Radio Brightness ◽  
Radio Brightness Distribution ◽  
Grating Interferometer

A study of the brightness distribution on the Sun at 21-cm wavelength on April 8, 1959, is described. High resolution observations were made of the partial eclipse on that day with a simple radiometer of high sensitivity. The brightness distribution of the uneclipsed Sun at the same wavelength was obtained using a cross-grating interferometer, which enabled the bright regions to be located accurately.

Quasi-common-optical-path heterodyne grating interferometer for displacement measurement

2010 ◽  
Vol 21 (11) ◽  
pp. 115304 ◽  
Author(s):  
H L Hsieh ◽  
J Y Lee ◽  
W T Wu ◽  
J C Chen ◽  
R Deturche ◽  
...  
Keyword(s):  
Optical Path ◽  
Displacement Measurement ◽  
Grating Interferometer

A displacement measurement system for ultra-precision heterodyne Littrow grating interferometer

2017 ◽  
Vol 25 (12) ◽  
pp. 2975-2985
Author(s):  
王磊杰 WANG Lei-jie ◽  
张 鸣 ZHANG Ming ◽  
朱 煜 ZHU Yu ◽  
鲁 森 LU Sen ◽  
杨开明 YANG Kai-ming
Keyword(s):  
Measurement System ◽  
Displacement Measurement ◽  
Ultra Precision ◽  
Grating Interferometer

High-resolution and wide range displacement measurement based on planar grating

2017 ◽  
Vol 404 ◽  
pp. 132-138 ◽  
Author(s):  
Jie Lin ◽  
Jian Guan ◽  
Feng Wen ◽  
Jiubin Tan
Keyword(s):  
High Resolution ◽  
Displacement Measurement ◽  
Wide Range

The crossed-grating interferometer: A new high-resolution radio telescope

1961 ◽  
Vol 108 (37) ◽  
pp. 48 ◽  
Author(s):  
W.N. Christiansen ◽  
N.R. Labrum ◽  
K.R. McAlister ◽  
D.S. Mathewson
Keyword(s):  
High Resolution ◽  
Radio Telescope ◽  
Grating Interferometer
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