针对相控阵雷达事件调度方法通常基于固定时间窗,在面对高速高机动目标时存在跟踪精度较低、调度成功率不高的问题,文中利用可变时间窗对传统调度方法加以改进。首先,通过滑窗内残差大小变化预测下一时刻无时间偏移时残差大小;然后,计算时间偏移对残差的影响;最后,根据跟踪波门大小限制实时计算时间偏移取值范围,即时间窗的大小。并以X-51A 高速高机动目标为例,设置两种实战场景进行仿真,结果表明:与利用固定时间窗的调度方法相比,利用可变时间窗的事件调度方法能很好地提高跟踪精度与调度成功率。

Phased array radar event scheduling method is usually based on fixed time windows. However, its tracking accuracy and scheduling success rate are often compromised in case of high speed and high maneuvering targets. To solve this problem, this paper proposes utilizing variable time window to improve the traditional scheduling method. First, the level of non-time-shifting residual error is predicted by the sample residual error of rolling time windows. Then, the impact of time-shifting on residual error is calculated. Finally, real time computation of offset range is limited based on the tracking window size, namely the time window range. Take X-51A high speed and high maneuvering target as an example, simulations of two kinds of actual scenarios are created. Simulation results show that, comparing with the scheduling method with fixed time window, the event scheduling method with variable time window can improve the tracking accuracy and success rate of scheduling.

TN957