机载低频超宽带合成孔径雷达运动补偿

Motion compensation for airborne low frequency UWB SAR

运动误差是造成低频超宽带合成孔径雷达(UWB SAR)成像质量降低的主要因素之一。给出了适合低频超宽带SAR运动补偿方法,并对该方法的剩余误差进行分析,得到在图像质量一定条件下,最大的波束张角和最大容忍的运动误差。最后利用计算机仿真,验证了该方法的有效性。

The motion error is one of the most important factors degraded the quality of low frequency UWB SAR images.The motion compensation method for low frequency UWB SAR is given in the paper, and the residual motion error of the method is analyzed.The relationship between the SAR images quality and the largest beam width with the largest tolerance motion error is given in the end of the paper. The computer simulation is used to verify the validity of this method.