摘要
以极坐标格式算法(PFA)产生子孔径图像为基础,研究重叠子孔径算法(OSA),通过补偿PFA中残留的二次相位误差,有效地扩大了高分辨率合成孔径雷达系统的图像聚焦范围,并通过引入无插值的PFA处理流程提高了计算效率。仿真和实测数据成像结果验证了该算法的有效性。
By using polar-format algorithm ( PFA) to generate subaperture images, me overlappeu subaperture algorithm (OSA) can effectively compensate the residue second-order phase error and enlarge the scene size of the foused image for a high-resolution synthetic aperutre radar system. Additionally, the signal processing steps of the interpolation-free PFA is also introduced to improve the computation efficiency. The point-targets simulation and live data processing results show the validity of the algorithm.
出处
《航空兵器》
2009年第5期50-54,共5页
Aero Weaponry
基金
教育部博士点基金(20070287053)
关键词
合成孔径雷达
成像算法
重叠子孔径算法(OSA)
相位误差补偿
synthetic aperture radar(SAR)
image formation algorithm
overlapped subaperture algorithm (OSA)
phase error compensation