Detection method for optical-axis parallelism of photoelectric theodolite in range

被引：0
作者：
Jia W.-W. [1 ]
Liu P.-Z. [1 ]
Tang Z.-L. [1 ]
Zhang S.-X. [1 ]
Hu Q.-P. [1 ]
机构：
[1] Huayin Weapon Test Center, Huayin
来源：
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2020年 / 28卷 / 08期
关键词：
Azimuth marker; Detecting in range; Optical-axis parallelism; Photoelectric theodolite;
D O I：
10.3788/OPE.20202808.1670
中图分类号：
学科分类号：
摘要：
We propose a method using azimuth markers to detect the optical-axis parallelism that affects the accurate measurement range of photoelectric theodolites. First, images of the azimuth markers were taken in the direct and reverse positions of the imaging system, respectively. Next, the three-dimensional coordinates of the cross hair corresponding to the range of the azimuth markers and the imaging angles of the cross hair were resolved. Finally, the optical-axis parallelism relative to the ideal collimating axis was detected using the formulas derived for optical-axis parallelism, enabling the detection accuracy to be analyzed. Errors associated with the coordinates of the projection center and the range of the azimuth markers influence the detection accuracy, which decreases as the distance to the azimuth markers increases. For anazimuth marker distance of 1 km, and error of coordinates of 1 cm, the optical-axis parallelism detection accuracy is 0.01 mrad. At sufficiently long distances, the accuracy of the optical-axis parallelismdetection has a considerable impact on the error associated with the imaging angle, thus satisfying the requirements of photoelectric theodolites. Thus, the problem of detecting the optical-axis parallelism affecting the measurement range of photoelectric theodolitesis resolved. © 2020, Science Press. All right reserved.
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页码：1670 / 1677
页数：7
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