论文部分内容阅读
对于激光发射系统,激光轴与电视光轴的平行度是保证其指向精度的关键。相对于传统的光电经纬仪,该系统光轴平行度误差是一动态误差,变化规律较为复杂。为修正激光发射系统激光轴与电视光轴的平行度误差,建立了光轴平行度误差模型,由此掌握该系统光轴平行度误差的变化规律。在总结了影响光轴平行度的主要系统误差源的基础上,分析各项误差对光轴平行度的影响,利用矢量旋转与坐标变换,建立了激光轴经折返镜后在空间坐标系内的指向模型,由此得到两光轴平行度误差模型,通过电视跟踪系统测量两光轴平行度误差值,并采用最小二乘法拟合得到误差模型中各待定系数。实验结果表明:拟合后的光轴平行度达到2.6″,模型能够基本描述两光轴平行度误差的变化规律。
For the laser emission system, the parallelism between the laser axis and the optical axis of the television is the key to ensure its pointing accuracy. Compared with the traditional theodolite, the error of optical axis parallelism of the system is a dynamic error, and the variation rule is more complicated. In order to correct the parallelism error of the laser axis and the optical axis of the laser, a model of optical axis parallelism error is established, and the variation law of the parallelism error of the optical axis of the system is obtained. Based on the summary of the major systematic error sources that affect the parallelism of the optical axis, the influences of the errors on the parallelism of the optical axis are analyzed. The vector rotation and coordinate transformation are used to establish the spatial distribution of the laser axis in the space coordinate system Pointing to the model, the error model of the parallelism of the two optical axes is obtained, the error of the parallelism of the two optical axes is measured by the television tracking system, and the coefficients to be determined in the error model are fitted by the least squares method. Experimental results show that the parallelism of the fitted optical axis reaches 2.6 ", and the model can basically describe the variation of the parallelism errors of the two optical axes.