航空学报 > 2011, Vol. 32 Issue (10): 1897-1904   doi: CNKI:11-1929/V.20110627.1733.001

弹道目标航迹片段关联及优化

俞建国, 刘梅, 陈锦海   

  1. 哈尔滨工业大学 电子与信息工程学院, 黑龙江 哈尔滨 150001
  • 收稿日期:2011-01-18 修回日期:2011-02-23 出版日期:2011-10-25 发布日期:2011-10-27
  • 通讯作者: Tel.: 0451-86418051-706 E-mail: liumei@hit.edu.cn E-mail:liumei@hit.edu.cn
  • 作者简介:俞建国(1982- ) 男,博士研究生。主要研究方向:目标跟踪、非线性滤波以及数据融合。 Tel: 0451-86418051-830 E-mail: yu5203202002@163.com; 刘梅(1963- ) 女,博士,教授,博士生导师。主要研究方向:多传感器数据融合、卫星通信技术及阵列信号处理。 Tel: 0451-86418051-706 E-mail: liumei@hit.edu.cn; 陈锦海(1987- ) 男,硕士研究生。主要研究方向:无源定位技术。 Tel: 0451-86418051-305 E-mail: chen87838453@126.com
  • 基金资助:

    航天科技创新基金 (CASC0202-3)

Ballistic Target Track Segments Association and Optimization

YU Jianguo, LIU Mei, CHEN Jinhai   

  1. School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2011-01-18 Revised:2011-02-23 Online:2011-10-25 Published:2011-10-27

摘要: 多弹道目标跟踪伴随着速度快、密集程度高以及测量误差大等因素,在跟踪过程中发生航迹中断是一个很普遍的现象。在未知导弹任何先验信息前提下如何将中断前后的航迹片段进行关联,提高航迹的连续性已成为亟待解决的难题。针对该问题提出了一种实时的离散最优关联算法,它利用速度信息对中断前后弹道外推航迹进行粗关联;将对数似然函数作为关联代价函数,采用拍卖算法完成关联代价函数的二维全局最优分配实现细关联并提高了关联概率;对关联上的航迹片段利用"窗口"统计最小误差方法进行优化,提高了整个航迹的连续性。仿真结果表明该算法能够将航迹平均周期提高1倍,在航迹中断期间对比最小二乘方法能够较大幅度地减小跟踪位置和速度的均方根(RMS)误差。

关键词: 弹道导弹, 航迹中断, 航迹片段关联, 航迹优化, 二维分配

Abstract: Track breakage is a common issue in a multiple ballistic target tracking scenario with high speeds, high densities and large measurement errors. How to improve the track continuity by associating the break track segments without any prior information is therefore a focus of research efforts. This paper proposes a real-time discrete optimal association algorithm which uses the velocity information to realize coarse association for extrapolation between the break track segments and improves the association probability by calculating the association cost function of trajectory segments using log-likelihood function and by adopting auction algorithm to realize 2D optimal assignment and fine association. Furthermore, the algorithm uses "Window" statistics method to calculate the minimum error in order to optimize the track continuity. Simulation results show that the proposed algorithm doubles the mean track life and yields significant improvements in position and speed root mean square RMS errors during the track breakage.

Key words: ballistic missile, track breakage, segment association, track optimization, assignment algorithm

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