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题名: Genetic Algorithm for Initial Orbit Determination with Too Short Arc (Continued)
作者: Li Xinran; Wang Xin
刊名: Acta Astronomica Sinica
出版日期: 2016
卷号: 57, 期号:2, 页码:181-187
DOI: 0001-5245(2016)57:2<181:JYYCSF>2.0.TX;2-4
英文摘要: When using the genetic algorithm to solve the problem of too-short-arc (TSA) determination, due to the difference of computing processes between the genetic algorithm and classical method, the methods for outliers editing are no longer applicable. In the genetic algorithm, the robust estimation is acquired by means of using different loss functions in the fitness function, then the outlier problem of TSAs is solved. Compared with the classical method, the application of loss functions in the genetic algorithm is greatly simplified. Through the comparison of results of different loss functions, it is clear that the methods of least median square and least trimmed square can greatly improve the robustness of TSAs, and have a high breakdown point.
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内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16845
Appears in Collections:空间目标与碎片观测研究基地_期刊论文

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