虽然人类的太空活动已经考虑了尽量减少空间碎片的措施，但近地轨道碎片的数量仍呈指数增长，特别是中小型碎片的现有数量已对在轨卫星构成了实质性的威胁。作为具有较高期待的消除碎片办法，用地基ＤＦ激光器和空基Ｎｄ∶ＹＡＧ激光器消除碎片的方案令人关注，它们可以以低成本和非破坏性的方式清除空间轨道的危险碎片。本文介绍了使用平均功率为１００ｋＷ的高功率、高重复频率ＰＰＮｄ∶ＹＡＧ激光器和平均功率约为１５ＭＷ 的ＤＦ激光器来保护在轨飞行器和清除直径为１～１０ｃｍ空间轨道危险碎片涉及的相关工作。

A number of debris in low earth orbit is exponentially growing although future debris release and mitigation measures have been considered in human space activities. Especially, an already existing population of small and medium debris is a concrete threat to operational satellites. Ground-based DF laser and space-based Nd∶YAG laser solutions appear as a highly promising answer, which can remove hazardous debris around the selected space assets at low expenses and in a non-destructive way. This paper introduces a research on the Space Vehicle(CV) protection and the orbit clearing from dangerous Elements of Space Debris(ESD) with diameters from 1 to 10 cm by means of a high-power and high repetition rate P-P Nd∶YAG laser with an average power of 100 kW and a DF-laser with an average power about 15 MW.