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近地小行星极短弧定轨的进化算法研究

李鑫冉 赵海斌

李鑫冉, 赵海斌. 近地小行星极短弧定轨的进化算法研究[J]. 力学学报, 2021, 53(3): 902-911. doi: 10.6052/0459-1879-20-084
引用本文: 李鑫冉, 赵海斌. 近地小行星极短弧定轨的进化算法研究[J]. 力学学报, 2021, 53(3): 902-911. doi: 10.6052/0459-1879-20-084
Li Xinran, Zhao Haibin. STUDY ON EVOLUTIONARY ALGORITHMS FOR INITIAL ORBIT DETERMINATION OF NEAR-EARTH ASTEROIDS WITH TOO-SHORT-ARC[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(3): 902-911. doi: 10.6052/0459-1879-20-084
Citation: Li Xinran, Zhao Haibin. STUDY ON EVOLUTIONARY ALGORITHMS FOR INITIAL ORBIT DETERMINATION OF NEAR-EARTH ASTEROIDS WITH TOO-SHORT-ARC[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(3): 902-911. doi: 10.6052/0459-1879-20-084

近地小行星极短弧定轨的进化算法研究

doi: 10.6052/0459-1879-20-084
基金项目: 1) 中科院先导B项目(XDB41000000);国家自然科学基金(11903085);国家自然科学基金(11633009);国家自然科学基金(11273067);澳门青年学者计划(AM201920);民用航天预研项目(D020304);民用航天预研项目(D020302);中国科学院创新交叉团队、中国科学院红外探测与成像技术重点实验室基金;小行星基金会
详细信息
    作者简介:

    赵海斌, 研究员, 主要研究方向: 太阳系小天体观测和研究, E-mail: meteorzh@pmo.ac.cn
    2) 李鑫冉, 助理研究员, 主要研究方向: 小行星轨道. E-mail: lixr@pmo.ac.cn;

    通讯作者:

    李鑫冉

    赵海斌

  • 中图分类号: P135$^+$.3

STUDY ON EVOLUTIONARY ALGORITHMS FOR INITIAL ORBIT DETERMINATION OF NEAR-EARTH ASTEROIDS WITH TOO-SHORT-ARC

  • 摘要: 近地小行星的巡天项目不断涌现, 得到了海量的观测数据.而巡天观测方式使获得的数据弧段过短, 传统方法在定轨和识别上存在极大困难,加之短弧定轨问题本身的病态性,如何有效利用这些短弧数据对于发现、监测和评估小行星的威胁具有重要意义.在进化算法下构建极短弧定轨的计算框架, 选用三变量的$(a,e,M)$优选法,保持维数较低的同时, 使优化结果不再依赖观测量.采用参数较少、操作简便的差分进化算法,利用不同偏心率小行星的轨道模拟数据进行试验,对获得的最优解及其分布聚集区域进行分析, 大偏心率轨道由于其本身的复杂性,会对算法搜索的灵敏度产生影响, 需缩小搜索空间以提高搜索能力.结果表明算法在小偏心率问题中表现较好,可以得到有效结果为后续工作提供参考信息, 大偏心率问题在传统方法失效的情况下,虽然最优解在整体分布中并不明显, 但分布仍包含真实解,可结合分布密度和适值大小进行分析. 未来需要对大偏心率问题作进一步研究,考虑其观测位置和观测时刻对算法产生的影响, 分类计算.

     

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出版历程
  • 收稿日期:  2020-03-12
  • 刊出日期:  2021-03-10

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