一种适用于小型平台SAR的实时成像系统  

A Real-Time Imaging System for Mini SAR

作　　者：孙晓晖[1] 方志红[1] 

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230031

出　　处：《雷达科学与技术》2007年第4期265-268,共4页Radar Science and Technology

摘　　要：针对小型化SAR成像处理器的特点,提出了一种具有性能高、体积小、实用化的实时处理系统的设计方案。从分析处理芯片、处理板并行体系结构的选择出发,给出了一种合理的SAR实时成像系统的硬件实现方案及具体实现方法。针对小型化SAR的成像特点,采用一种子孔径补偿的改进型RD成像算法,该算法具有运算量较小、补偿效果好的特点,并提出了软件设计的优化方案。Based on the mini SAR imaging processing characteristics, a method for designing a practical, real-time processing system with high performance and small size is presented. By analyzing DSP chip and system parallel structure, this paper discusses the reasonable hardware design and detailed implementation method of the real-time SAR imaging system. An improved range Doppler imaging algorithm applying sub-aperture motion compensation is used in the system, which features less operation and fine compensation. The optimized method of software design is also presented.

关 键 词：ADSP—TS101芯片 小型SAR 实时成像 RD成像算法 

分 类 号：TN958[电子电信—信号与信息处理] TN957[电子电信—信息与通信工程]