【摘要】 卫星激光测距技术是对空间目标进行高精度的距离测量,以获得星地间的距离。用此观测数据可以精确测定空间目标的运行轨道、解算全球地面测距站的地心坐标以及地球参数。北京房山人卫激光观测站在实现千赫兹测距系统改造升级的基础上,实现了对所有的高中低轨卫星观测并取得可观的高质量激光测距数据。由于天宫2号运行轨道低,目标运行速度快,导致天宫二号出现预报偏差比较大、伺服控制系统驱动能力偏低以及空间目标观测数据缺失等问题。通过北京房山人卫激光站对天宫2号准确的预报,成功获取天宫2号激光观测有效数据用以轨道检核,同时也为以后保质保量完成空间目标观测任务提供了坚实基础,也为即将开始的空间非合作目标的观测任务开启了一个良好开端。更多还原

【Abstract】 Satellite laser ranging technology obtains the distance between the stars and the ground by performing high-precision distance measurement on the space target.Also,the orbit of the space target,the geocentric coordinates of the global ground ranging station and the earth parameter can be solved via the observation data.Based on the transformation and upgrading of the kilohertz ranging system,Beijing Fangshan Renwei Laser Observatory has realized all high-middle and low-orbit satellite observations and achieved considerable high-quality laser ranging data.Due to the low orbit of Tiangong 2 and the fast running speed of the target,the forecast deviation of Tiangong 2 is relatively larger.The Beijing Fangshan Renwei laser station overcomes the problem of low servo system driving capability.Successfully obtained the effective data of Tiangong 2 laser observation is used for orbital inspection,provides a solid foundation for the completion of space target observation tasks in the future,and also opens a good beginning for the upcoming space debris observation.更多还原