高效机载SAR实时成像处理系统设计
Design of efficient real-time processing system for airborne-SAR imagery
杨磊 1刘亚波 1唐禹 1邢孟道1
作者信息
- 1. 西安电子科技大学雷达信号处理国家重点实验室,陕西西安710071
- 折叠
摘要
针对实际中机载SAR成像的运动误差问题,提出基于子孔径分割的高效机载SAR运动补偿算法,其中成像采用线频调变标(Chirp Scaling,CS)算法.同时设计基于FPGA+DSP的实时信号处理系统,并通过合理的数据流控制,运算资源分配和任务分配,将实时成像算法高效可靠地映射到实时信号处理器内.仿真和外场成像实验都验证了该SAR实时成像处理算法和系统的有效性及可靠性.
Abstract
Due to that airborne SAR imaging systems often face motion error,the motion compensation algorithm combined with sub-aperture technique is proposed,where chirp scaling (CS) algorithm is used for image formation.What is more,a real-time signal processing system based on FPGA+DSP framework is designed.Convenient data flow strategy is presented,and computational resource is also well arranged to realize efficient operation of the proposed algorithm in real-time processor.Both simulated and real-time radar data experiments are listed to validate the effectivity of the proposal.
关键词
机载合成孔径雷达/线频调变标算法/实时处理系统Key words
airborne synthetic aperture radar (SAR)/chirp scaling (CS) algorithm/real-time processing system引用本文复制引用
基金项目
武器装备预研基金(9140C010209090C01)
高校基本科研业务费(JY10000902026)
出版年
2013
NETL
NSTL
维普
万方数据