讨论多设备跟踪同一弹道的数据融合问题 .首先给出弹道参数、测元真实信号和测量误差的节省参数模型 ,由此 ,得到弹道跟踪数据的节省参数模型 .据此研究了测元加权方法 .提出了基于残差和基于估值精度的测元遴选准则 .根据节省参数模型 ,研究弹道跟踪数据的自校准问题 .该方法能明显提高弹道跟踪数据精度 ,同时还可以对弹道跟踪系统进行精度鉴定 . This paper discusses the data fusion problem of multi-device tracking the same trajectory.Firstly, a saving parameter model of trajectory parameters, real signals and measurement errors of trajectory parameters is obtained, and the saving parameter model of trajectory tracking data is obtained. This paper proposes a selection criterion based on residuals and based on the estimation accuracy.According to the saving parameter model, this paper studies the problem of self-calibration of ballistic tracking data.The method can obviously improve the accuracy of ballistic tracking data, meanwhile, the accuracy of ballistic tracking system .