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信标模式下的机动目标测速数据存在较大时变系统误差,导致目标飞行弹道解算精度降低.针对此问题,本文通过增加表征系统误差的分量项,对机动目标运动模型的状态向量扩维,并将系统误差引入到测量方程中,提出一种弹道估计新算法.利用无迹卡尔曼滤波计算跟踪目标的轨迹,同时估计系统误差.仿真试验表明,该方法无论在应答或信标模式下都可以解算出满足精度要求的弹道.
There is a large time-varying systematic error in the maneuvering target velocity data in beacon mode, which leads to the decrease of the accuracy of the target flight trajectory.Based on this problem, by adding the component term that characterizes the systematic error, the state vector expansion of the maneuvering target motion model , And introduces the system error into the measurement equation, a new algorithm of trajectory estimation is proposed, and the trajectory of the tracking target is calculated by using the unscented Kalman filter and the system error is estimated. Simulation results show that the proposed method, in response or beacon mode Can be calculated to meet the accuracy requirements of the ballistic.