中文摘要：

在介绍捕获、跟踪、瞄准（ATP）精跟踪子系统结构、控制原理及控制算法的基础上,通过搭建半物理模型来分析不同分辨率数模转换器对应的跟踪性能,分别对同一位置光束与加入扰动后的光束进行跟踪对比实验。结合精跟踪控制系统的信号传输,分析不同分辨率的数模转换器对ATP系统跟踪精度的影响。实验结果表明,数模转换器的分辨率越高,ATP系统的跟踪性能就越好;使用14位数模转换器时,继续增加分辨率,ATP系统的跟踪精度没有得到显著提升。对跟踪后的光斑质心信号进行频谱分量统计,发现干扰抑制带宽之外的频段内数模转换器的分辨率与其对应的频谱分量成正比,因此需要进一步提高精跟踪系统的干扰抑制带宽来实现更高精度的跟踪。

英文摘要：

On the basis of presenting structure, control principle and control algorithm of acquisition, pointing （ATP） fine tracking subsystem, a semi physical model is built to analyze the tracking pe digital to analog converters with different resolution at the same position and the beam after disturbance and tracking contrast experiments are carried out tracking and rformance of on the beams Combined with the signal transmission of fine tracking control system, the effects of digital to analog converters with different resolution on the tracking accuracy of ATP system are analyzed. The experimental results show that the higher the resolution of digital to analog converter is, the better the tracking performance of the ATP system is. However, when a 14 bit digital to analog converter is used and the resolution is increased, there is little contribution to improving tracking accuracy. By analyzing the spectral component of spot centroid signal after tracking, we find that the resolution of digital to analog converter within frequency band and outside the disturbance suppression bandwidth is proportional to the corresponding spectraZ component, so it is necessary to improve the disturbance suppression bandwidth of fine tracking system to achieve high accuracy tracking.