SLR系统时延精确标校实现及分析

Implementation and analysis of accurate calibration for SLR system delay

针对地靶测量值精度和稳定性差,卫星激光测距数据质量不稳定的问题,通过时延标校理论阐述,提出1种卫星激光测距数据质量的分析方法:从回波光子的角度来分析影响卫星激光测距数据质量的因素;并利用分析结果指导实验。实验结果表明,采用白天和夜间衰减片角度分别为75°和45°的方案,lageos-1卫星实测精度平均值由2.23提高到2.03 cm,可以满足提高卫星激光测距数据质量的目的。

Aiming at the problems of the low accuracy and weak stability of the measured values of the ground targets,and the unstable quality of the satellite laser ranging data,the paper proposed a quality analysis method of satellite laser ranging data:the perspective of echo photons was taken as the factors affecting the quality of satellite laser ranging data;and the thought of quality analysis was used to guide an experiment.Result showed that the average measurement accuracy of lageos-1 satellite would be improved from 2.23 to 2.03 cm by adopting the scheme of 75°and 45°attenuator in daytime and night respectively,which could help improve the quality of satellite laser ranging data.