基于共享总线的SAR实时成像系统研究  

Study on SAR Real-Time Imaging System Based on Shared-Bus

作　　者：李芬芬[1] 杜江[1] 邢孟道[1] 

机构地区：[1]西安电子科技大学,西安710071

出　　处：《火控雷达技术》2007年第4期17-20,共4页Fire Control Radar Technology

摘　　要：合成孔径雷达成像已经成为雷达的发展趋势,要实现雷达实时成像,就要满足雷达信号处理过程中大数据通信带宽和大运算量的要求。本文中系统运算核心是一个由四片数字信号处理器组成的共享总线式并行处理模块,对频域补偿弯曲的RD算法,实现了实时SAR成像,并通过令牌环的形式解决了共享总线中多处理器间的总线冲突问题。Synthetic aperture radar （SAR） imaging is a new development trend of radar. To achieve real-time imaging, it is necessary to meet requirements to wide data communication bandwidth and large operation amount during radar signal processing. Operation core of the system described in this paper is a parallel processing module based on shared-bus, it is composed of four digital signal processors. SAR realtime imaging is implemented by using of RD algorithm in frequency-domain, and problem of buses confliction between multiple processors in a shared-bus system is solved by using of token-ring.

关 键 词：合成孔径雷达 实时 共享总线 令牌环 

分 类 号：TN958[电子电信—信号与信息处理] TP274[电子电信—信息与通信工程]