目标航迹在转弯状况下自适应滤波算法的研究

ADAPTIVE FILTER FOR TRACKING MANEUVER TARGET

在分析机动目标在弯道飞行状况下的运动特点后推导了一个建立在以弯道曲率中心为极点的极坐标系上的目标模型并提出了一个自适应滤波算法.在自适应滤波算法中引进了对曲率中心参数的修正以及采用似然比判据检测进入(或退出)机动状态的时刻.计算结果表明,该算法具有较强的跟踪弯道飞行目标的能力,且计算量增加不多.

In this paper, a model based on polar coordinates located at the center of maneuner path in the space is introduced after analysing the movement of maneuver target on circular path. An adaptive filter for tracking maneuver target is discussed. The center coordinates are being modified during maneuver filtering. A multiple hypothesis log-likelihood ratio test is used to determine when a circular maneuver has occurred. The method described here displays improved performance over methods besed on Cartesian coordinates when tracking circular turns. The amount of calculation increases a little.