大视场红外光电经纬仪精度标定

发布时间：2018-09-19 07:32

【摘要】：为了提高大视场红外光电经纬仪测角精度,提出了一种多元回归分析的静态精度标定方法。对影响其精度的原因进行分析,并提出相应的解决办法。首先介绍了红外光电经纬仪的系统组成和测量原理,分析了物像空间在大地坐标系下的坐标对应关系,然后,指出了影响大视场红外光电经纬仪测量精度的原因是由于加工与装调过程中引起的误差,并且该误差与光学设计值不完全一致。最后,针对这一问题,提出了使用多元回归分析数据处理方法,该方法在全视场内按区域建立多元回归分析计算模型,当进行精度解算时,通过多元回归分析模型对脱靶量进行修正,使用修正后的脱靶量进行测角精度计算。实验结果表明:经过多元回归分析修正后的方位角与高低角测角误差标准差分别由21.44″与26.81″提高到7.62″与6.38″。有效地提高了大视场红外光电经纬仪的测角精度。
[Abstract]:In order to improve the angle measurement accuracy of infrared photoelectric theodolite in large field of view, a static precision calibration method based on multivariate regression analysis is proposed. The reason that affects its precision is analyzed, and the corresponding solution is put forward. This paper first introduces the system composition and measuring principle of infrared photoelectric theodolite, analyzes the coordinate correspondence relation of object space in geodetic coordinate system, then, It is pointed out that the measurement accuracy of the infrared photoelectric theodolite with large field of view is affected by the error caused by the process of machining and adjusting, and the error is not completely consistent with the optical design value. Finally, in order to solve this problem, a method of multivariate regression analysis data processing is proposed. The model of multivariate regression analysis is established by region in the whole field of view, and when the precision is calculated, The miss distance is modified by multivariate regression model, and the accuracy of angle measurement is calculated by using the modified miss distance. The experimental results show that the standard deviation of azimuth angle and high and low angle measurement error is raised from 21.44 "and 26.81" to 7.62 "and 6.38" respectively. The angle measurement accuracy of infrared photoelectric theodolite with large field of view is improved effectively.
【作者单位】：中国科学院长春光学精密机械与物理研究所;吉林大学电子科学与工程学院;
【基金】：国家863高技术研究发展计划(2009AA8080603)
【分类号】：TH761.1

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