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基于Linux的嵌入式高速SAR数据存储技术
黄斌
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(海装重庆局，重庆400043)

摘要:

为了实现对SAR 原始回波数据的实时存储，提出了在以PowerPC为硬件核心的嵌入式L inux软件平台上，使用SSD硬盘实现高速数据存储的方案。采用Linux驱动程序控制SAS硬盘控制器，将SAR原始回波数据记录在SSD硬盘阵列上。模拟实验测试中数据存储速度可以达到 200 Mbyte/s。分析了影响数据存储速度的因素，实验表明该方案可以满足SAR原始回波数据实时存储的要求。

关键词: 合成孔径雷达原始回波数据高速数据存储嵌入式Linux S SD硬盘 SAS控制器

DOI：

基金项目:

Embedded high-speed SAR data storage technology based on Linux

HUANG Bin

()

Abstract:

In order to record SAR(Synthetic Aperture Radar) raw echo data, a method with SS D(Solid State Disk) on embedded Linux is provided in this paper. Linux drivers are used to manage the SAS(Serial Attac hed SCSI) controller and the data is stored in SSD with highspeed. The speed of data storage can ac hieve 200 Mbyte/s in experiment.The factors inf luencing storage speed are analysed. The test result shows that the design can satisfy the requirements of h ighspeed data storage.

Key words: synthetic aperture radar(SAR) raw echo data high speed data storage embedded Linux solid state disk(SSD) serial att ached SCSI(SAS) controller