基于直线斜飞弹道的弹载SAR成像方案  

A Missile-borne SAR Image Scheme Based on Linear Slant Trajectory

作　　者：张刚[1] 祝明波[1] 赵振波[1] 李相平[1] 

机构地区：[1]海军航空工程学院电子信息工程系,山东烟台264001

出　　处：《电讯技术》2012年第4期440-446,共7页Telecommunication Engineering

基　　金：山东省"泰山学者"建设工程项目~~

摘　　要：针对弹载SAR成像实时性高、非匀直弹道下成像算法、运动补偿困难,难以工程实现的现状,提出了一种末制导阶段在恒定高度采用直线斜飞弹道的SAR成像制导模式。详细分析了该模式的工作过程、极坐标格式SAR聚束成像算法及直线斜飞弹道对制导性能产生的影响。仿真结果表明,该模式在增加少量制导时间的代价下,借鉴机载聚束SAR成像算法即能获得高质量的SAR图像,为SAR末制导的工程化提供了有益借鉴。For the difficulties in realizing synthetic aperture radar（SAR） terminal guidance, such as high real- time, imaging algorithms under non - uniform straight trajectory and motion compensation, a SAR terminal guid- ance mode is proposed, where the missile flies inca straight squint trajectory at constant hight. The working pro- cess polar format SAR spotlight imaging algorithm and effect of straight slant trajectory on guidance performance are analysed in detail. Simulation results show that this working mode can obtain high - resolution image refering to space spotlight SAR image algorithm in the price of adding little guidance time and it gives a meaningful refer- ence in realizing SAR terminal guidance.

关 键 词：弹载SAR 聚束成像 末制导 极坐标格式算法 

分 类 号：N959[自然科学总论]