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单平台成像目标运动特性反演方法

谌炳汉 左峥嵘 夏鲁瑞

谌炳汉, 左峥嵘, 夏鲁瑞等 . 单平台成像目标运动特性反演方法[J]. 北京航空航天大学学报, 2018, 44(12): 2528-2535. doi: 10.13700/j.bh.1001-5965.2018.0340
引用本文: 谌炳汉, 左峥嵘, 夏鲁瑞等 . 单平台成像目标运动特性反演方法[J]. 北京航空航天大学学报, 2018, 44(12): 2528-2535. doi: 10.13700/j.bh.1001-5965.2018.0340
CHEN Binghan, ZUO Zhengrong, XIA Luruiet al. Motion characteristic inversion method of single platform imaging target[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(12): 2528-2535. doi: 10.13700/j.bh.1001-5965.2018.0340(in Chinese)
Citation: CHEN Binghan, ZUO Zhengrong, XIA Luruiet al. Motion characteristic inversion method of single platform imaging target[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(12): 2528-2535. doi: 10.13700/j.bh.1001-5965.2018.0340(in Chinese)

单平台成像目标运动特性反演方法

doi: 10.13700/j.bh.1001-5965.2018.0340
详细信息
    作者简介:

    谌炳汉  男, 硕士研究生。主要研究方向:模式识别、图像分析、计算机视觉等

    左峥嵘  男, 副教授。主要研究方向:模式识别、图像分析、图像制导、计算机视觉、自动目标识别等

    夏鲁瑞  男, 副研究员。主要研究方向:天基目标探测、计算机视觉等

    通讯作者:

    左峥嵘,E-mail: zhrzuo@mail.hust.edu.cn

  • 中图分类号: TP391.41

Motion characteristic inversion method of single platform imaging target

More Information
  • 摘要:

    针对单平台观测条件下目标运动特性反演问题,提出了基于序列图像的目标空间位置重建及运动参数估计模型和方法。为抑制大气折射对位置重建精度的影响,提出将大气视为球面分层,并划分若干层,采用反向追踪策略,从成像系统的入射光线出发,逆向计算出光线在每一层大气中的传输路径,根据追踪路径与目标发射面的交点确定目标空间位置。为减少发射面等先验参数误差的影响,以目标加速度参数一致性作为优化准则,采用迭代估计,在先验误差范围内搜索最优发射面,修正重建误差。通过以上过程反演得到目标运动轨迹以及运动参数,在先验误差范围内,反演的位置误差在200 m以下,速度误差在60 m/s以下。

     

  • 图 1  实现方案总流程图

    Figure 1.  General flowchart of implementation scheme

    图 2  目标视线方向矢量示意图

    Figure 2.  Schematic diagram of target line-of-sight direction vector

    图 3  成像投影相关坐标系的关系示意图

    Figure 3.  Schematic diagram of relationship between image projection related coordinate systems

    图 4  地心坐标系与平面坐标系之间的关系图

    Figure 4.  Relationship between geocentric coordinate system and plane coordinate system

    图 5  相机、目标和地心组成的平面内,光在每层大气中的传输路径图

    Figure 5.  In plane composed of camera, target and center of the earth, transmission path of light in each layer of atmosphere

    图 6  位置及径向速度平均误差随拟合点数变化曲线

    Figure 6.  Curves of location and radial velocity average error changing with number of fitting points

    图 7  发射面优化分析图

    Figure 7.  Diagram of launch plane optimization analysis

    图 8  单平台定位的位置平均误差随指向误差标准差变化曲线

    Figure 8.  Curves of single platform positioning's location average error changing with pointing error standard deviation

    图 9  单平台定位的径向速度平均误差随指向误差标准差变化曲线

    Figure 9.  Curve of single platform positioning's radial velocity average error changing with pointing error standard deviation

    图 10  单平台定位的位置误差随发射面误差变化曲线

    Figure 10.  Curve of single platform positioning's locationerror changing with launch plane error

    图 11  平台位置误差对目标重建位置误差及速度误差的影响

    Figure 11.  Effect of platform location error on target reconstruction location error and speed error

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出版历程
  • 收稿日期:  2018-06-07
  • 录用日期:  2018-07-13
  • 刊出日期:  2018-12-20

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