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

Wen-wu JIA; Pei-zheng LIU; Zi-li TANG; San-xi ZHANG; Qiu-ping HU

doi:10.3788/OPE.20202808.1670

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

Modern Applied Optics | 更新时间：2020-08-14

- Detection method for optical-axis parallelism of photoelectric theodolite in range
- Optics and Precision Engineering Vol. 28, Issue 8, Pages: 1670-1677(2020)
- 作者机构：
  
  中国华阴兵器试验中心, 陕西华阴 714200
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20202808.1670
  CLC： TJ760.6;TJ06
- Received：05 June 2019，
  
  Revised：02 August 2019，
  
  Accepted：02 August 2019，
  
  Published：15 August 2020
- 稿件说明：
移动端阅览
Wen-wu JIA, Pei-zheng LIU, Zi-li TANG, et al. Detection method for optical-axis parallelism of photoelectric theodolite in range[J]. Optics and precision engineering, 2020, 28(8): 1670-1677.
DOI：

Wen-wu JIA, Pei-zheng LIU, Zi-li TANG, et al. Detection method for optical-axis parallelism of photoelectric theodolite in range[J]. Optics and precision engineering, 2020, 28(8): 1670-1677. DOI： 10.3788/OPE.20202808.1670.

摘要

针对可换负载式光电经纬仪更换成像探测组件后的光轴平行性检测，提出了一种靶场适用的光电经纬仪光轴平行性检测方法。该方法在正倒镜状态下拍摄方位标，结合经纬仪角度测量结果和方位标距离测量结果计算方位标十字丝中心在成像坐标系下的坐标，通过基于坐标变换推导的光轴平行性检测公式计算成像光轴相对理想照准光轴的偏差，从而实现对光轴平行性的检测。对该方法的检测精度进行了分析，结果表明成像系统投影中心坐标测量误差和距离测量误差对光轴平行性检测误差随着方位标距离增大而减小，当方位标距离为1 km、坐标测量误差为1 cm时，坐标测量误差和距离测量误差对平行性检测精度的影响约为0.01 mrad；当方位标距离足够远时，平行性检测精度与成像系统的角度测量误差相当，能够满足靶场使用需求。

Abstract

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.

关键词

Keywords

references

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