弹载大前斜SAR的运动误差模型及精度分析  

Modeling and Precision Analysis of Highly Squinted-looking Missile-borne SAR

作　　者：杨勇[1] 李亚超[2] 常军[1] 任培宏[1] 

机构地区：[1]中国西南电子技术研究所,成都610036 [2]西安电子科技大学雷达信号处理重点实验室,西安710071

出　　处：《电讯技术》2010年第1期26-30,共5页Telecommunication Engineering

摘　　要：通过建立弹载大前斜式SAR的运动误差模型,分析了导弹在平飞段正侧式SAR、平飞段大前斜式SAR和下压段大前斜式SAR三种情况下运动补偿的精度要求,以及在不同合成孔径时间条件下弹载下压段大前斜式SAR成像对运动补偿的精度要求。分析结果表明,平飞正侧视SAR对运动补偿精度要求最高,下压段大前斜视SAR对运动补偿精度要求最低;合成孔径时间越长,运动补偿精度要求越高。Based on the proposed motion error model for highly squinted- looking missile- borne SAR,the precision request for motion compensations is presented in this paper,with respect to side- looking for parallel flight, slightly squinted- looking for parallel flight and highly squinted- looking SAR for diving flight of guided missile. Moreover, the influence analysis of highly squinted- looking SAR for diving flight of guided missile is detailed, with regard to different synthetic aperture time. The analysis results show that the motion compensation request for parallel flight side- looking SAR is the highest, the one for diving flight highly squinted- looking SAR is the lowest and the longer the synthetic aperture time is, the preciser the motion compensation requests.

关 键 词：弹载SAR 大前斜式SAR 运动补偿 合成孔径时间 精度分析 

分 类 号：TN957[电子电信—信号与信息处理]