PD雷达导引头的遮挡现象及其处理方法

The Eclipse Phenomena and its Solving Method on PD Radar Seeker

介绍了PD雷达导引头出现遮挡现象的机理和数学模型,以及它对导引头角度跟踪系统、频率跟踪系统和制导系统的影响。为了克服这些影响,在角度跟踪系统中增加一项速度控制;在速度跟踪系统中增加一项加速度反馈控制;在制导系统中采用状态卡尔曼滤波。在遮挡区,三个系统都要采用外推控制,使其误差尽量减小。

The mechanism and mathematic model of eclipse phenomena on PD radar seeker are introduced in the article, and its effect on angle tracking system, frequency tracking system and guidance system are also analyzed. In order to overcome the effect of eclipse phenomena, one item of velocity control is added in the angle tracking system, and one item of acceleration feedback control is added in the velocity tracking system and the state Kalman filter is used in the guidance system. In the eclipse area, the extrapolation control is adopted in three systems to reduce errors.