合成孔径激光成像雷达的二维傅里叶变换成像算法
刘立人
刊名光学学报
2014
卷号34期号:1页码:128001
关键词遥感 侧视合成孔径激光成像雷达 直视合成孔径激光成像雷达 成像算法 傅里叶变换 矩形孔径 圆形孔径
其他题名2D Fourier-Transform Imaging Algorithm for Synthetic Aperture Imaging Ladars
中文摘要提出了合成孔径激光成像雷达(SAIL)的二维傅里叶变换成像算法,即对回波信号进行顺轨向相位二次项共轭补偿后直接实施二维傅里叶变换。归纳了啁啾光源侧视SAIL,平移二次项波面直视SAIL和偏转平面波面直视 SAIL的数据收集方程,采用连续变量和函数说明了算法的成像过程,并分析了矩形和圆形天线孔径下的成像分辨率,最后给出了离散傅里叶变换的表达形式。算法中交轨向和顺轨向的时间域数据均直接变换到频率域成像,给出了圆形孔径天线SAIL的随交轨向变化的顺轨向成像分辨率的解析解。
英文摘要A2D Fourier transform imaging algorithm for synthetic aperture imaging ladar(SAIL)is proposed.The collected data are first compensated with a conjugated quadratic phase and then imaged by 2D Fourier transform. Unified data collection equations for side-looking SAILs with chirped laser,down-looking SAILs with shifting of quadratic wavefronts and with deflection of plane wavefronts are formulated.Functions and relative imaging resolutions of the algorithm for these SAILs with rectangular and circular apertures are described and analyzed in terms of continuous variables and functions.Then,the expression of the 2D discrete Fourier transform is given.The feature of the algorithm is that the collected data in the time domain are transformed into the frequency domain both in the travel direction and in its orthogonal direction to be directly imaged.The mathematical formulation of the travel-direction imaging resolution varying along the orthogonal direction is deduced.
收录类别CSCD
语种中文
CSCD记录号CSCD:5079553
内容类型期刊论文
版本出版稿
源URL[http://ir.siom.ac.cn/handle/181231/13476]  
专题上海光学精密机械研究所_空间激光信息技术研究中心
作者单位刘立人, 中国科学院上海光学精密机械研究所, 中国科学院空间激光通信和检验技术重点实验室, 上海 201800, 中国.
推荐引用方式
GB/T 7714
刘立人. 合成孔径激光成像雷达的二维傅里叶变换成像算法[J]. 光学学报,2014,34(1):128001.
APA 刘立人.(2014).合成孔径激光成像雷达的二维傅里叶变换成像算法.光学学报,34(1),128001.
MLA 刘立人."合成孔径激光成像雷达的二维傅里叶变换成像算法".光学学报 34.1(2014):128001.
个性服务
查看访问统计
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。


©版权所有 ©2017 CSpace - Powered by CSpace