基于DM642的SAR图像处理硬件平台*

作者：张宏科,邵根富,林岳松,陈华杰 日期：2008-11-03/span> 浏览：3710 查看PDF文档

基于DM642的SAR图像处理硬件平台*

张宏科,邵根富,林岳松,陈华杰
(杭州电子科技大学 信息与控制研究所，浙江 杭州 310037)

摘要：为了解决SAR图像数据量大、实时处理困难的问题，采用TI公司生产的主频高为720 MHz的高性能多媒体处理芯片TMS320DM642，设计了一种SAR图像处理硬件平台，成功完成了基于小波软阈值的图像去噪算法在硬件平台上的移植，整个处理时间约95.38 ms。实验表明，该系统能够满足SAR图像对于处理速度的要求。
关键词：DM642；合成孔径雷达；图像处理；数字信号处理器；软阈值去噪
中图分类号：TN911.7文献标识码：A文章编号：1001-4551(2008)10-0059-04

SAR image processing hardware platform based on DM642
ZHANG Hong-ke, SHAO Gen-fu, LIN Yue-song, CHEN Hua-jie
(Institute of Information & Control, Hangzhou Dianzi University, Hangzhou 310037, China)
Abstract: In order to solve the problem that the data volume of synthetic aperture radar(SAR)  is huge and image processing in real-time is difficult, using TI high-performance digital media processor TMS320DM642 with up to 720 MHz clock rate, a kind of hardware platform for SAR image processing was designed, a wavelet domain soft-thresholding denoising algorithm on hardware platform was implemented successfully, costing about 95.38 ms. The test results indicate that, the system can meet the requirements of high speed in the SAR image processing.
Key words: DM642; synthetic aperture radar(SAR); image processing; digital signal processor(DSP); soft-thresholding denoising
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