一种类型辅助的航迹相关算法

A Classification-aided Track Correlation Algorithm

  • 摘要: 针对分布式多传感器信息融合系统中可利用目标特征和属性信息提高航迹相关性能的问题,提出了一种类型辅助的航迹相关算法。该算法以统计学理论为基础,首先将基于目标运动状态和类型信息的航迹相关问题转化为相应的假设检验问题;然后,利用目标运动状态检验统计量和类型检验统计量,根据预设的显著性因子,构建运动状态相关矩阵和类型相关矩阵,并通过逻辑“与”规则形成融合航迹相关矩阵;最后,采用最小平均统计距离准则进行相关判决,并通过Monte Carlo仿真分析了基于运动状态的航迹相关算法和类型辅助的航迹相关算法的相关正确率随相关点数、编队中的目标间距和过程噪声系数等因素的变化规律。仿真结果表明,在相关点数较少、目标密集或过程噪声较大等情况下,在航迹相关过程中引入目标类型信息可以获得更好的性能。

     

    Abstract: A classification-aided track correlation algorithm is presented to improve the correlation performance using features and attributes of the targets in a distributed multisensor information fusion system. First, track correlation problems using kinematic states and classification information of the targets are transformed into corresponding hypothesis tests based on statistical mathematics theory. According to the distinguished factors which are set beforehand, the correlation matrices of kinematic states and classification information are constructed using the statistics of kinematic states and classification information of the targets. Then the fusion track correlation matrix is formed based on the logical “and” fusion rule. Finally, the minimum average statistical distance criterion is used to make a track correlation decision. By Monte Carlo method, the changing disciplines of correct correlation rate with the factors such as the number of correlation information point, the distance between targets in the same formation and the coefficients of the process noise are simulated, using the track correlation algorithm based on target kinematic states and the classification-aided track correlation algorithm. The simulation results show that, in the case of little number of correlation information points, dense targets distribution or large process noise, a better correlation performance can be obtained when the classification information is introduced into track correlation process.

     

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