非相干散射雷达的空间碎片参数统计分析

采用匹配滤波方法处理了非相干散射雷达的原始采样数据(时长约7h), 共检测到394个空间碎片, 估算了其轨道高度、径向速度、散射截面、等效直径及径向加速度等参数, 统计分析了这些参数的变化特征, 得到穿过雷达 波束的空间碎片流量约为60h-1, 信噪比为10～1000, 空间碎片主要分布在600～1100km和1400～1600km两个高度区间, 散射截面 10-5～10-2m2, 等效直径3～10cm, 径向速度-1.5～1.5km·s-1, 径向加速度20～90m·s-2, 这对于中国的空间碎片探测与研究具有重要参考意义. 

Statistical Analysis of Space Debris's Parameters Based on the Incoherent Scattering Radar

The ISR (Incoherent Scatter Radar) raw sampling data (time duration about 7 hours) is processed by Matching Filter (MF) method and totally 394 space debris are detected. Parameters including the height, radial velocity, Radar Cross-Section (RCS), effective diameter and radial velocity etc. are estimated, and statistical analysis about these parameters is made. The results show that the mean flux per hour through the radar beam is 60; the signal to noise ratio of space debris echo is above 10, which shows that the space debris is a strong target for ISR; the orbital height mainly is in two zones (600～1100km and 1400～1600km); the RCS is about 10-5～10-2m2 and the effective diameter is about 3～10cm; the radial velocity is about -1.5～1.5km·s-1; the radial acceleration is about 20～90m·s-2. These results show the good perspective for ISR in the monitoring and forecasting of space debris.