周峰,李健

• 1:中国电子科技集团公司第三十二研究所

摘要(Abstract)：

合成孔径雷达(SAR)数据处理中的一个重要操作是分别访问存储器中的距离向和方位向数据,当前在Keystone多核DSP平台上主要使用单个核或EDMA访问SAR数据,但很多情形下无法充分利用存储器的带宽。针对该问题,结合EDMA,DDR存储器等外设的硬件特性,提出一种适用于多核DSP的SAR数据分块映射存储方法及行切换开销最优的并行访问技术,并给出应用并行访问模式的一个充分条件。测试结果表明,分块映射存储方法能均衡距离向和方位向数据的访问速度,且更能充分地利用存储器带宽,提高数据的访问效率。

关键词(KeyWords)： 多核DSP;并行访问;信号处理;矩阵转置;合成孔径雷达;分块映射

Abstract:

Keywords:

基金项目(Foundation): 核高基国家科技重大专项(2017ZX01041201);; 中国电科十三五雷达技改项目(2017ZC72006)~~

作者(Author): 周峰,李健

DOI: 10.16652/j.issn.1004-373x.2018.15.006

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