具有三维转动目标的逆合成孔径雷达成像算法

The imaging mothed for the radar targets with three dimensional ratoing

传统的 ISAR 距离一多普勒法成像基于匀速运动的目标模型。当飞机目标作机动飞行时,转速和转轴经常是时变的,若用传统方法成像,会使图像模糊,甚至无法辨识。文中提出了距离一瞬时多普勒成像的概念和方法,它可对一般机动飞行目标成像。实测数据成像结果表明该文的方法是可行的。

When the target moves irregularly,the Doppler of each scatterer and the imaging projection plane to a maneuvering target may change with time.The commonly used imaging algorithms are not suitable to the target with a changing rotating drection.A conception of range-instantaneous Doppler imaging is presented in this paper.Our targets even when the rotating direction is time-varying.The method is verified by real radar data.