弹载俯冲大前斜SAR成像几何校正参数误差影响分析  

Analysis of Image Geometric Correction Algorithm and Parameter Influences of Missile-borne High-squint SAR with Diving Maneuver

作　　者：陈娟[1] CHEN Juan(Southwest China Institute of Electronic Technology,Chengdu 610036,China)

机构地区：[1]中国西南电子技术研究所,成都610036

出　　处：《电讯技术》2022年第7期892-897,共6页Telecommunication Engineering

摘　　要：弹载合成孔径雷达(Synthetic Aperture Radar,SAR)成像需依托弹道参数完成斜距图像向地距图像的几何校正,在俯冲大前斜SAR成像模式下的几何校正性能对弹道参数的精度非常敏感。针对弹载俯冲大前斜视SAR成像模式下成像斜距图为距离多普勒类型图像的几何校正算法,从理论上分析了多维弹道参数误差带来的几何校正畸变量,通过仿真验证了算法及畸变量分析的有效性。该研究对雷达导引头的系统设计、目标识别技术需求等提供了理论依据,具有重要的工程应用价值。Missile-borne synthetic aperture radar(SAR)imaging should perform geometric correction which depends on ballistic parameters.The geometric correction performance is very sensitive to ballistic parameters on diving high-squint SAR model.The influence of missile multidimensional parameters is analyzed theoretically for the geometric correction algorithm of diving high-squint SAR model.The simulation results demonstrate the validity of this algorithm.This study in this paper provides a theoretical basis for missile seeker system design and target identification requirements.It has important engineering application value.

关 键 词：合成孔径雷达(SAR) 俯冲大前斜SAR 几何校正 弹道参数 

分 类 号：TN957.52[电子电信—信号与信息处理]