Automatic Measurement Method of Cannon Barrel Pointing Based on Binocular Vision

Hao Zhang; Xin Yang; Longmiao Chen; Xianwei Zhu

doi:10.3788/AOS221397

Acta Optica Sinica, Volume. 43, Issue 2, 0212004(2023)

Automatic Measurement Method of Cannon Barrel Pointing Based on Binocular Vision

Hao Zhang^1,2, Xin Yang^1,2, Longmiao Chen³, and Xianwei Zhu^1,2、*

Author Affiliations

¹Institute of Intelligent Optical Measurement and Detection, Shenzhen University, Shenzhen 518000, Guangdong, China

²College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518000, Guangdong, China

³School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210000, Jiangsu, China

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Abstract Get PDF(in Chinese)

Figures & Tables(11)

Fig. 1. Schematic diagram of cannon barrel pointing measurement

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Fig. 2. Algorithm flowchart

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Fig. 3. Schematic diagram of vertical line direction measurement

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Fig. 4. Semi-physical simulation layout

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Fig. 5. Accuracy verification results. (a) Altitude angle error varying with altitude angle; (b) direction angle error varying with altitude angle; (c) rotation angle error varying with altitude angle; (d) altitude angle error varying with direction angle; (e) direction angle error varying with direction angle; (f) rotation angle error varying with direction angle

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Fig. 6. Repeated verification results. (a) Altitude angle repeatability; (b) direction angle repeatability

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Fig. 7. Schematic diagram of measurement error analysis

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Fig. 8. Field experiment layout

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Fig. 9. Repeated verification experimental results. (a) Altitude angle repeatability; (b) direction angle repeatability

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Table 1. Barrel pointing measurement results

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Table 1. Barrel pointing measurement results

Number	Standard value		Measurement value		Error
Number	$α$	$γ$	$α$	$γ$	$α$	$γ$
1	24.000	-12.000	23.868	-11.883	-0.132	0.117
2	36.000	6.000	35.960	6.023	-0.040	0.023
3	48.000	18.000	48.050	18.007	0.050	0.007
4	30.000	-6.000	29.890	-5.958	-0.110	0.042
5	54.000	30.000	54.149	30.061	0.149	0.061
6	66.000	24.000	66.108	23.911	0.108	-0.089
7	36.000	-6.000	35.872	-6.010	-0.128	-0.010

Table 2. Measurement results of small-angle rotation pointing of barrel

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Table 2. Measurement results of small-angle rotation pointing of barrel

Number	Standard value		Measurement value		Error
Number	$α$	$γ$	$α$	$γ$	$α$	$γ$
1	0	3.000	-0.048	2.996	-0.048	-0.004
2	0	-3.000	-0.056	-2.990	-0.056	0.010
3	3.000	0	2.973	0.016	-0.027	0.016
4	-3.000	0	-2.968	-0.007	0.032	-0.007
5	3.000	3.000	2.952	3.021	-0.048	0.021
6	-3.000	3.000	-3.003	2.965	-0.003	-0.035
7	-3.000	-3.000	-2.960	-3.006	0.040	-0.006
8	3.000	-3.000	2.998	-3.003	-0.002	-0.003

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Hao Zhang, Xin Yang, Longmiao Chen, Xianwei Zhu. Automatic Measurement Method of Cannon Barrel Pointing Based on Binocular Vision[J]. Acta Optica Sinica, 2023, 43(2): 0212004

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Paper Information

Category: Instrumentation, Measurement and Metrology

Received: Jun. 30, 2022

Accepted: Jul. 21, 2022

Published Online: Feb. 7, 2023

The Author Email: Zhu Xianwei (zxw2899@szu.edu.cn)

DOI:10.3788/AOS221397

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology