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针对双机协同无源跟踪精度要求较高的问题,根据双机与目标的几何态势,分析了双机几何态势对双机无源探测精度的影响,给出了位置精度因子(PDOP)的公式,得出了双机的最优几何配置.提出了双机协同无源目标跟踪系统的控制结构,采用扩展信息滤波(EIF)对目标状态进行估计,以信息熵最大为轨迹优化的最优性能指标,采用了滚动时域优化(RHO)来实时地控制飞机的运动.仿真结果表明,该轨迹优化算法能够使飞机按满足最优几何配置的轨迹飞行,说明基于PDOP的最优几何配置的正确性,降低目标位置的估计误差,提高双机协同无源跟踪的精度.
According to the geometrical situation between the two planes and the target, this paper analyzes the influence of the two-plane geometric situation on the passive detection accuracy of the two-plane cooperative passive tracking, and gives the formula of position precision factor (PDOP) , The optimal geometry configuration of dual-machine is obtained.The control structure of dual-machine cooperative passive target tracking system is proposed.The extended state information filter (EIF) is used to estimate the target state, and the optimal performance (RHO) is used to control the movement of the aircraft in real time.The simulation results show that the trajectory optimization algorithm can make the aircraft fly on the trajectory satisfying the optimal geometric configuration, indicating that the optimal PDOP-based geometric configuration is correct Reduce the estimation error of the target position, and improve the accuracy of double-machine cooperative passive tracking.