中国科学院人造卫星系统在1月14日至2月7日为期二十五天内,连续组织了对苏联卫星“宇宙1402”后两个碎片的观测、测轨和预报。实践证明,我们取得的目视、照相资料,测定的轨道根数,发出的光学预报和雷达预报,均具有较高的精度,为我国卫星观测网较好地预报这两个目标的陨落时间和地点奠定了坚实的实践基础。 The Chinese Academy of Sciences satellite system in January 14 to February 7 for a period of 25 days, the organization of the Soviet satellite “Cosmos 1402” after the two fragments of observations, track and forecast. Practice has proved that both the visual and photographic data we obtained, the number of orbital roots determined, the optical forecasts and the radar forecasts issued are of high precision and provide a good forecast of the fall time of these two targets for China’s satellite observational network Location has laid a solid foundation for practice.