Measurement of two-dimensional angle using dynamic modulation and interference fringe shape

Xuanze, 王选择 Wang; Zhongsheng, 翟中生 Zhai; Yu-ning, 钟毓宁 Zhong; Liangen, 杨练根 Yang; Wen-chao, 刘文超 Liu

doi:10.3788/ope.20142202.0274

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Theoretical Derivation Of Two-dimensional Angle Measurement1

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2023

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“…By formula (1), the relationship between α, β, and d can be obtained. The simulation results are shown in the following figure: It can be seen from figure 1 that when the angle changes in the range of -0.2 m rad to 0.2 m rad, the width d of the fringes changes from theoretical infinity to 1 mm, which has a high sensitivity to angle change, and the range of two-dimensional angle measurement is preliminarily judged [7].…”

Section: Theoretical Derivation Of Two-dimensional Angle Measurementmentioning

confidence: 99%

Research on homodyne interferometric angle measurement based on ellipse fitting

Yang¹,

Zhao

Wang

et al. 2023

Earth and Space: From Infrared to Terahertz (ESIT 2022)

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In this paper, the influence of the noise and acquisition device resolution of the system is researched on Homodyne Interferometric Angle Measurement Based on Ellipse Fitting. The research method combining data simulation and experimental verification is adopted. The influence of noise and acquisition resolution on the angular resolution is obtained by comparing the experimental and simulation results. The experimental verification results are consistent with the data simulation results. The system angle measurement resolution reaches 10-5 rad, and the system noise error is between 3%- 8%.

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Section: Theoretical Derivation Of Two-dimensional Angle Measurementmentioning

confidence: 99%