| 引用本文: | 宋正鑫,胡卫东,陶勇,等.基于雷达波束篱笆的空间碎片数量的置信区间估计.[J].国防科技大学学报,2008,30(2):72-77.[点击复制] |
| SONG Zhengxin,HU Weidong,TAO Yong,et al.Estimation of the Confidence Interval for Space Debris Population Based on Radar Beam Fence[J].Journal of National University of Defense Technology,2008,30(2):72-77[点击复制] |
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| 基于雷达波束篱笆的空间碎片数量的置信区间估计 |
| 宋正鑫, 胡卫东, 陶勇, 郁文贤 |
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(国防科技大学 ATR实验室，湖南 长沙 410073)
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| 摘要: |
| 针对雷达波束篱笆空间碎片探测模式，提出了一种估计碎片数量置信区间的方法。对于给定的轨道高度范围，将轨道倾角和雷达散射截面足够大的碎片是否真正穿越波束篱笆这一事件用(0-1)分布来建模，根据所获取的轨道高度数据，得到该轨道高度范围内碎片穿越波束篱笆的平均概率，进而采用中心极限定理估计出该范围内碎片总数量的置信区间。仿真实验验证了方法的有效性。 |
| 关键词: 航天器环境 空间碎片数量 统计采样 雷达波束篱笆 |
| DOI： |
| 投稿日期：2007-09-14 |
| 基金项目:国家863高技术资助项目(2003AA134030；2005AA736050) |
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| Estimation of the Confidence Interval for Space Debris Population Based on Radar Beam Fence |
| SONG Zhengxin, HU Weidong, TAO Yong, YU Wenxian |
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(ATR Lab., National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| A method of estimating the confidence interval for debris population using radar beam fence is described. Whether a debris object may cross the beam fence, that is, whether a debris has large enough inclinationand radar cross section or not, is actually detected and modeled as a (0-1) distribution. Using debris altitude data collected, the average probability of crossing the beam fence is obtained. The confidence interval for debris population is estimated by the Central Limitation Theorem. The validity of the method is verified by simulation. |
| Keywords: spacecraft environment space debris population statistical characterization radar beam fence |
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