CAJ | 학술논문

快速分解后向投影(Fast Factorized Back-Projection, FFBP)最初用于超宽带SAR成像，并在聚束SAR信号处理领域取得了巨大的成功。然而，由于积分孔径和角域升采样的限制，FFBP 算法难以直接用于条带 SAR处理。为了提高FFBP算法在条带SAR处理的实用性，该文从积分孔径和角域波数带宽的角度出发，提出一种适用于条带SAR处理的重叠图像法。该方法极大地保留FFBP算法的运算效率，有效地避免因角域升采样带来数据量大的问题。最后，通过斜视条带SAR仿真实验验证了该方法的有效性。
쾌속분해후향투영(Fast Factorized Back-Projection, FFBP)최초용우초관대SAR성상，병재취속SAR신호처리영역취득료거대적성공。연이，유우적분공경화각역승채양적한제，FFBP 산법난이직접용우조대 SAR처리。위료제고FFBP산법재조대SAR처리적실용성，해문종적분공경화각역파수대관적각도출발，제출일충괄용우조대SAR처리적중첩도상법。해방법겁대지보류FFBP산법적운산효솔，유효지피면인각역승채양대래수거량대적문제。최후，통과사시조대SAR방진실험험증료해방법적유효성。
Fast Factorized Back-Projection (FFBP) is originally developed for Ultra-WideBand (UWB) Synthetic Aperture Radar (SAR), and it shows great success for spotlight SAR signal processing. However, its implementation is not straightforward for stripmap SAR due to the limitation of integration aperture and angular upsampling. To investigate the applicability of FFBP to stripmap SAR, this paper describes a reasonable implementation of overlapped-image method based on integration aperture and angular wavenumber bandwidth. This approach retains high efficiency of the original FFBP. Finally, the simulated squinted SAR data are utilized to verify the effectiveness of the proposed method.