实时SAR成像系统矩阵原位转置的实现  

Implementation of Matrix In-place Transpose for Real-time SAR Imaging System

作　　者：林桐[1] 谢宜壮[1] 刘伟[1] 

机构地区：[1]北京理工大学雷达技术研究所,北京100081

出　　处：《计算机工程》2013年第6期319-320,F0003,共3页Computer Engineering

摘　　要：在合成孔径雷达成像处理系统中,矩阵转置已成为影响系统实时性的重要因素。为提高矩阵转置效率,提出一种用于快速矩阵原位转置的方案,基于现场可编程门阵列和同步动态随机存储器(SDRAM)实现该方案。系统测试结果表明,读写平均效率达到SDRAM峰值带宽的64%,验证了该方法可有效提高矩阵转置的总体效率。Matrix transpose is widely used in real-time Synthetic Aperture Radar（SAR） imaging processing system. The performance of matrix transpose directly determines the efficiency of SAR imaging system. This paper proposes a new in-place matrix transpose method based on Field Programmable Gate Array（FPGA） and Synchronous Dynamic Random Access Memory（SDRAM）. According to the test results, the average two-dimensional access efficiency is increased to 64% of the peak bandwidth of SDRAM by this method, which verifies that the method can effectively improve the matrix transpose overall efficiency.

关 键 词：合成孔径雷达 矩阵原位转置 实时成像 现场可编程门阵列器件 同步动态随机存储器 CS算法 

分 类 号：TN911.72[电子电信—通信与信息系统]