应用天文研究组知识库

激光测距技术对空间碎片的监测和预警具有重要的意义。为了提高云南天文台1.2m望远镜激光测距平台对空间碎片的监测能力，开展了白天空间碎片激光测距技术与方法研究。首先，分析了利用云南天文台现有的1.2m望远镜激光测距试验平台开展白天空间碎片激光测距的可行性。然后，对白天空间碎片激光测距关键问题进行了分析并提出解决措施。通过白天空间碎片激光测距试验，获得了一部分空间碎片激光测距数据，所测量空间碎片的雷达散射截面范围在9.0m2到20.0m2、近地点范围在400km到900km、远地点范围在500km到900km。结果表明：云南天文台空间碎片激光测距平台具备空间碎片白天激光测距的潜力，可为后续开展全天时空间碎片激光测距研究提供技术支持。

Laser ranging technology is of great significance to the monitoring and early warning of space debris. In order to improve the ability of the 1. 2m Telescope laser ranging platform of Yunnan Observatory to monitor space debris, the daytime space debris laser ranging technology and method were studied. Firstly, the feasibility of using the existing 1. 2m Telescope laser ranging test platform of Yunnan Observatory to carry out daytime space debris laser ranging is analyzed. Then, the key problems of space debris laser ranging in daytime are analyzed and the solutions are proposed. Through the daytime space debris laser ranging experiment, some space debris laser ranging data are obtained. The measured space debris radar cross section ranges from 9. 0m2 to 20. 0m2, perigee ranges from 400km to 900km, and apogee ranges from 500km to 900km. The results show that the space debris laser ranging platform of Yunnan Observatory has the potential of space debris laser ranging in daytime, which can provide technical support for the follow-up research of space debris laser ranging.