合成孔径激光雷达成像算法  

Study on Imaging Algorithm of Synthetic Aperture Ladar

作　　者：张二磊[1] 张建奇[1] 

机构地区：[1]西安电子科技大学技术物理学院,陕西西安710071

出　　处：《电子科技》2009年第11期12-15,共4页Electronic Science and Technology

摘　　要：作为一种相干探测体制雷达,合成孔径激光雷达,以光外差探测技术记录目标的强度和相位信息,距离向原始数据为解线频调信号,文中把合成孔径雷达距离多普勒成像算法,推广至合成孔径激光雷达。详细分析了聚焦成像的相位补偿和距离徙动校正。最后用该算法处理了正侧视条带模式合成孔径激光雷达点目标的原始数据,得到了良好的成像结果。Being a kind of coherent radar, synthetic aperture ladar records targets intensity and phase information using optical heterodyne detection technique. Raw data in range direction is de-chirp signal, therefore, Range-Doppler imaging algorithm is extended to synthetic aperture ladar in this paper, phase compensation and range migration correction in the focusing and imaging process are analyzed in detail. Finally, a point target raw data from a side-looking SAL is treated by using this algorithm and favorable imaging result is obtained.

关 键 词：合成孔径激光雷达 解线频调 匹配滤波 相位补偿 

分 类 号：TN958.58[电子电信—信号与信息处理]