机载火控雷达斜视实时成像处理器  

Real-time imaging processor of high squint in airborne fire control radar

作　　者：胡学成[1] 雷万明[2] 刘中[1] 于文震[2] 

机构地区：[1]南京理工大学电光院,江苏南京210094 [2]南京电子技术研究所,江苏南京210013

出　　处：《系统工程与电子技术》2006年第6期864-866,共3页Systems Engineering and Electronics

基　　金："十五"国防重点预研基金资助课题(41307020101)

摘　　要：介绍了机载火控雷达实时成像处理器结构和斜视实时成像算法流程,成像处理器是专用芯片和通用数字信号处理器相结合的并行处理器,实时成像算法采用时域校走动的距离-多普勒算法。由于INS/GPS数据难以满足成像精度要求,从回波数据中提取运动参数,用于运动补偿。距离脉压和方位脉压结果保留16位定点,解决了实时成像算法中转角存储和存储器容量不够的问题。试飞结果证明,实时成像算法在大斜视角下能稳定成像。An real-time imaging processor＇s structure and the algorithm flow in airborne fire control radar are introduced. The processor is composed of application specific integrated circuit and digital signal processor and the algorithm is range-Doppler one which corrects range walk in time domain. Since the INS/GPS does not meet the need of imaging, Doppler parameters are obtained from SAR raw data to cempensate the motion error. After range and azimuth compression, the results are reserved 16-bit integers to resolve two problems., memory corner turn and insufficient memory. The results of flying show the algorithm can image stably in high squint.

关 键 词：雷达成像 成像处理器 运动补偿 

分 类 号：TN957[电子电信—信号与信息处理]