光电经纬仪动态误差修正方法

发布时间：2018-10-17 12:48

【摘要】：针对光电经纬仪红外相机测量系统动态测量精度低的问题,提出了一种通过修正各分系统之间延时时间从而提高动态测量精度的方法。首先介绍了光电经纬仪红外相机测量系统的组成和测量原理,分析了大地坐标系下物像空间的对应关系,指出了影响光电经纬仪红外相机测量系统的原因是相机内方位元素的准确性和光学畸变校正效果。分析了影响光电经纬仪红外相机测量系统动态测量精度的原因,提出了采用各分系统根据工作参数采用不同延时时间的误差修正方法。实验结果验证了该方法的正确性和准确性,标定结果与精度比对实验结果表明,经过动态测角修正的方位角与高低角测角误差均方根值分别由27.89"与17.67"提高到10.07"与8.56",该方法有效地提高了动态测量精度,并且对其他光电测量设备具有参考价值。
[Abstract]:In order to solve the problem of low dynamic measurement accuracy of photoelectric theodolite infrared camera measuring system, a method is proposed to improve the dynamic measurement accuracy by modifying the delay time between the subsystems. Firstly, the composition and measuring principle of the photoelectric theodolite infrared camera measurement system are introduced, and the corresponding relation of the object space in the geodetic coordinate system is analyzed. It is pointed out that the accuracy of the inner orientation elements of the camera and the correction effect of optical distortion are the reasons that affect the measurement system of the photoelectric theodolite infrared camera. This paper analyzes the reasons that affect the dynamic measurement accuracy of the photoelectric theodolite infrared camera measurement system, and puts forward the error correction method of adopting different delay time according to the working parameters of each subsystem. The experimental results verify the correctness and accuracy of the proposed method, and the experimental results show that the calibration results are compared with the accuracy of the proposed method. The root-mean-square values of azimuth and high-low angle errors modified by dynamic angle measurement are raised from 27.89 "and 17.67" to 10.07 "and 8.56" respectively. This method improves the dynamic measurement accuracy effectively and has reference value for other photoelectric measuring equipments.
【作者单位】：吉林大学电子科学与工程学院;中国科学院长春光学精密机械与物理研究所;
【基金】：中国科学院三期创新项目
【分类号】：TH761.1

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