摘要
距离走动校正和二次相位误差补偿是匀加速运动平台下大斜视DBS成像的难点.因此,本文提出一种基于Radon变换校正距离走动、基于Radon模糊变换补偿二次相位误差的DBS成像算法,并推导了此校正和补偿算法的空域适应性条件.该算法原理简单、精度高,且无需雷达平台运动参数、视角等先验信息,可实现预定方位分辨率的DBS成像.仿真实验验证了算法的有效性.
For high squint DBS imaging on a constant acceleration movement platform,range walk correction and quadratic phase error compensation are challenging issues.According to these two issues,this paper proposes a DBS imaging algorithm,which corrects the range walk based on the Radon transform and compensates the quadratic phase error based on the Radon ambiguity transform.And the spatial adaptability of the algorithm is also analyzed.It is easy to understand,shows good performance and needs no prior knowledge of the movement parameters and the look angle of the radar platform.Simulation results demonstrate the validity of the method.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2010年第6期1280-1286,共7页
Acta Electronica Sinica
