载机机动对目标被动探测跟踪影响的算法研究

针对单载机仅用单传感器对目标进行纯方位测量的被动探测跟踪问题,研究了载机的不同机动方式对目标被动探测跟踪算法性能的影响。建立了修正极坐标下目标被动探测跟踪模型,分析了该模型在扩展的卡尔曼滤波中的滤波特性和载机机动方式对该模型的影响,在Matlab环境中进行了仿真。结果验证了在载机不机动的情况下,该目标被动探测跟踪算法无法跟踪上目标;载机机动后一定时间后不再做机动会导致算法重新发散;当载机做适当的周期机动,该算法可持续跟踪目标。

Study on algorithm of fighter maneuvers effect on bearings-only tracking

For target tracking with passive detection just gets the angle value,the passive detection system is studied by computer simulation,including the effect caused by different fighter maneuver manners.A localization model of passive detection is built under the modified polar coordinates.The filtering characteristics of extended Kalman filter of the model and fighter maneuver manners which effect on the model are analyzed.The tracking model is studied by the computer simulation with Matlab.The results show that the passive detection of target tracking algorithms could not track the target in the case of non-maneuver;the algorithms would be re-divergent in the case of non-maneuver after a certain period of maneuver;the target is tracked unless the fighter aircraft maneuver appropriately.