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计算机工程 ›› 2013, Vol. 39 ›› Issue (6): 319-321.doi: 10.3969/j.issn.1000-3428.2013.06.071

• 开发研究与工程应用 • 上一篇    

实时SAR成像系统矩阵原位转置的实现

林 桐，谢宜壮，刘 伟   

  1. (北京理工大学雷达技术研究所，北京 100081)
  • 收稿日期:2012-06-06 出版日期:2013-06-15 发布日期:2013-06-14
  • 作者简介:林 桐(1987－)，女，硕士研究生，主研方向：数字信号处理；谢宜壮、刘 伟，讲师、博士

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

LIN Tong, XIE Yi-zhuang, LIU Wei   

  1. (Radar Research Lab, Beijing Institute of Technology, Beijing 100081, China)
  • Received:2012-06-06 Online:2013-06-15 Published:2013-06-14

PDF

791

被引次数

9

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。

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

Abstract: 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.

Key words: Synthetic Aperture Radar(SAR), matrix in-place transpose, real-time imaging, Field Programmable Gate Array(FPGA) device, Synchronous Dynamic Random Access Memory(SDRAM), Chip Scaling(CS) algorithm

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