利用2010年3月25日欧洲非相干散射雷达的常规电离层探测数据,分析了实测数据中接收功率突变的现象.高度发生在500 km以上的功率突变一般不是由于地球物理影响产生的,而要归因于卫星或空间碎片.采用匹配滤波方法实现了对空间碎片的探测和提取,利用相干积累的方法提高了信噪比,共获得363个碎片,得到了碎片随高度和时间的分布.结果表明,碎片高度分布主要集中在800 km左右,与欧洲非相干散射组织现有的碎片数据具有一致性. The phenomenon of abrupt change in received power in measured data was analyzed using conventional ionospheric sounding data from the European incoherent scatter radar on March 25, 2010. The abrupt changes in power over 500 km are generally not due to geophysical effects, but rather Due to the satellite or space debris, the matched filter method was used to detect and extract the space debris, and the signal-to-noise ratio was improved by the method of coherent accumulation. A total of 363 fragments were obtained and the fragments were distributed with height and time. The results show that the height distribution of debris mainly concentrates at about 800 km, which is consistent with the existing debris data of European incoherent scattering organization.