Calibration and design of long focal length measurement instruments based on Talbot-Moiré effect

ZHANG Hao; DAI Hong; FAN Hongying; CHEN Hao; JIANG Zewei; JIA Jing; MENG Qing'an; HU Shaoyun

doi:10.7510/jgjs.issn.1001-3806.2019.04.016

LASER TECHNOLOGY > 2019 > 43(4): 527-531. > DOI: 10.7510/jgjs.issn.1001-3806.2019.04.016

ZHANG Hao, DAI Hong, FAN Hongying, CHEN Hao, JIANG Zewei, JIA Jing, MENG Qing'an, HU Shaoyun. Calibration and design of long focal length measurement instruments based on Talbot-Moiré effect[J]. LASER TECHNOLOGY, 2019, 43(4): 527-531. DOI: 10.7510/jgjs.issn.1001-3806.2019.04.016

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Calibration and design of long focal length measurement instruments based on Talbot-Moiré effect

1.
Southwest Institute of Technical Physics, Chengdu 610041, China
2.
Military Represnetative Office of Army Airforce Stationed in Chengdu, Chengdu 610036, China

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Received Date: July 10, 2018
Revised Date: September 25, 2018
Published Date: July 24, 2019

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Abstract

Abstract

In order to meet the test and calibration requirements of 100m~3km extra-long focal length, a set of long focal length measurement instrument was designed based on Talbot-Moiré fringes. Aiming at the system parameters affecting the measurement uncertainty, different calibration methods were designed respectively. Experiments were carried out to verify the results. The results show that, after calibration, the measurement uncertainty is 6.4%. Measurement results of the long focal length measurement instrument after calibration, and knife-edge instrument meet the measurement uncertainty formula. The maximum comparison result is 0.64, less than 1. Uncertainty evaluation of the long focal length measurement instrument is reasonable. The research validates the feasibility of calibration methods for system parameters of a long focal length measurement instrument.
- measurement and metrology,
- long focal length measurement,
- Talbot effect,
- Moiré fringe,
- measurement uncertainty

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