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微纳卫星总剂量评估优化

佘璇 楼海君 宋仁庭 李琪聪 金仲和

佘璇,楼海君,宋仁庭,等. 微纳卫星总剂量评估优化[J]. 北京航空航天大学学报,2024,50(3):985-993 doi: 10.13700/j.bh.1001-5965.2022.0331
引用本文: 佘璇,楼海君,宋仁庭,等. 微纳卫星总剂量评估优化[J]. 北京航空航天大学学报,2024,50(3):985-993 doi: 10.13700/j.bh.1001-5965.2022.0331
SHE X,LOU H J,SONG R T,et al. Optimization of TID assessment of micro-satellites[J]. Journal of Beijing University of Aeronautics and Astronautics,2024,50(3):985-993 (in Chinese) doi: 10.13700/j.bh.1001-5965.2022.0331
Citation: SHE X,LOU H J,SONG R T,et al. Optimization of TID assessment of micro-satellites[J]. Journal of Beijing University of Aeronautics and Astronautics,2024,50(3):985-993 (in Chinese) doi: 10.13700/j.bh.1001-5965.2022.0331

微纳卫星总剂量评估优化

doi: 10.13700/j.bh.1001-5965.2022.0331
详细信息
    通讯作者:

    E-mail:louhj04@zju.edu.cn

  • 中图分类号: O571.33

Optimization of TID assessment of micro-satellites

More Information
  • 摘要:

    针对微纳卫星在空间环境中遇到的总剂量(TID)效应,为更加准确地评估卫星内敏感点的剂量值,基于正二十面体的几何划分方法改进了传统的空间网格划分,宏观计算并验证了粒子透过材料的衰减,实现扇形角等效评估优化。围绕计算准确度和效率,构建形状模型进行比较验证,通过与优化等立体角划分法、正八面体划分法的比较,表明该方法更加稳定高效,计算速度可提高6.4%,更适合评估复杂形状模型。基于改进的三维总剂量评估方法,对形状模型进行针对性总剂量防护,防护效果相较于无差别防护可提高255.1%。研究成果可有效提高微纳卫星总剂量评估效率,保障星内敏感器件在任务周期内的可靠运行,为微纳卫星总剂量防护提供重要参考。

     

  • 图 1  粒子传输方式

    Figure 1.  Particle transportation method

    图 2  三维总剂量评估流程

    Figure 2.  Three-dimensional TID assessment process

    图 3  剂量-深度曲线

    Figure 3.  Dose-depth curves

    图 4  三维形状模型

    Figure 4.  Three-dimensional shape model

    图 5  总剂量计算

    Figure 5.  TID calculation

    图 6  模型d的剂量分布

    Figure 6.  Dose distribution of model d

    图 7  模型d的总剂量计算

    Figure 7.  TID calculation of model d

    图 8  总剂量计算时间

    Figure 8.  TID calculation time

    图 9  平均每根射线计算时间

    Figure 9.  Average calculation time per ray

    图 10  三维剂量分布

    Figure 10.  Three-dimensional dose distribution

    图 11  针对性加固

    Figure 11.  Targeted reinforcement

    图 12  加固后的剂量分布

    Figure 12.  Dose distribution after reinforcement

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出版历程
  • 收稿日期:  2022-05-07
  • 录用日期:  2022-08-07
  • 网络出版日期:  2022-08-29
  • 整期出版日期:  2024-03-27

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