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Multi-matrix opto-electronic system for measuring deformation of the millimeter range radiotelescope elements 被引量:1
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作者 LI Ren-pu Konyakhin Igor +1 位作者 Tong Minh Hoa ZHOU Min 《Optoelectronics Letters》 EI 2019年第2期144-146,共3页
A novel optical instrument is proposed and studied to measure the deformation of each connection point for a mirror, which includes 24 multi-matrix base units and can be used in millimeter-scale signal reflection syst... A novel optical instrument is proposed and studied to measure the deformation of each connection point for a mirror, which includes 24 multi-matrix base units and can be used in millimeter-scale signal reflection systems.Experimental investigations reveal that the error of measurement is σ=8.7×10^(-3) mm at a distance of 5 500 mm, which allows to measure the linear deformation of a radiotelescope with the mirror diameter of 70 m. 展开更多
关键词 MEASURING RADIOTELESCOPE instrument
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A 2D quadrangular pyramid photoelectric autocollimator with extended angle measurement range
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作者 Konyakhin Igor LI Renpu +5 位作者 ZHOU Min Dang Dinh Duan Nikitin Mikhail HUANG Guifu YANG Jiawen TAN Xin 《Optoelectronics Letters》 EI 2021年第8期468-474,共7页
A photoelectric autocollimator with high accuracy and extended measurement range based on the quadrangular pyramid is proposed,and the corresponding algorithms are also deduced.A new image processing algorithm has bee... A photoelectric autocollimator with high accuracy and extended measurement range based on the quadrangular pyramid is proposed,and the corresponding algorithms are also deduced.A new image processing algorithm has been proposed to improve the accuracy,and the corresponding errors are also estimated,the error does not exceed half a pixel when the distance between the marks more than two radii.The experimental results have verified that the measurement range of the proposed two-dimensional(2D)quadrangular pyramid photoelectric autocollimator can be increased 2 times than that of the flat mirror photoelectric autocollimator from 10′to 15′.The accuracy is better than 1″when the deflection is less than 15′. 展开更多
关键词 TOCOL PYRAMID PHOTOELECTRIC
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