scholarly journals PHASE LIGHT RANGERFINDER WITH ADAPTIVE OPTICAL CALIBRATION SYSTEM

2020 ◽  
Vol 2020 (3) ◽  
pp. 83-88
Author(s):  
I.O. Bragynets ◽  
Keyword(s):  
Calibration System ◽  
Optical Calibration

Laser interferometer calibration system for extensometers

1968 ◽  
Vol 58 (5) ◽  
pp. 1379-1383
Author(s):  
G. Hade ◽  
M. Conner ◽  
J. T. Kuo
Keyword(s):  
Laser Interferometer ◽  
Michelson Interferometer ◽  
Low Frequency ◽  
Calibration Method ◽  
Linear Range ◽  
Laser Source ◽  
Calibration System ◽  
Frequency Oscillator ◽  
Transducer Output ◽  
Optical Calibration

Abstract A laser interferometer technique has been developed for calibrating extensometers at the Ogdensberg Station of Lamont Geological Observatory. It provides remotecontrolled calibration of both horizontal and vertical extensometers within the linear range of the transducer output. The present calibration system consists of an electromagnetic driving unit and a Michelson interferometer. The transducer end of the extensometer is displaced longitudinally with an electromagnetic driving unit, which is excited by a variable low-frequency oscillator with a bandwidth of 0.0005 to 60 kHz. The resultant displacement is detected by counting fringe displacements of the interferometer with an Ne-He laser source. With this calibration system, motion as small as 0.03 micron can be determined with excellent repeatability and with errors of less than 5 per cent, in comparison with errors of more than 40 per cent for the optical calibration method previously used.

Atmospheric optical calibration system for outdoor photovoltaic measurements

Solar Cells ◽  
1987 ◽  
Vol 21 (1-4) ◽  
pp. 329-335 ◽  
Author(s):  
R. Hulstrom ◽  
T. Cannon
Keyword(s):  
Calibration System ◽  
Optical Calibration

Optical calibration system of NIPR for aurora and airglow observations

Polar Science ◽  
2020 ◽  
Vol 26 ◽  
pp. 100570
Author(s):  
Y. Ogawa ◽  
A. Kadokura ◽  
M.K. Ejiri
Keyword(s):  
Calibration System ◽  
Optical Calibration

Method and device for tests of the laser optical calibration system for the Baikal-GVD underwater neutrino Cherenkov telescope

2021 ◽  
Author(s):  
Konrad Kopański ◽  
Wojciech Noga ◽  
Dariusz Gora ◽  
Mateusz Wiśniewski ◽  
Apoorva Bhatt ◽  
...  
Keyword(s):  
Calibration System ◽  
Cherenkov Telescope ◽  
Optical Calibration
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