| 星载SAR原始数据压缩模块的FPGA实现 |
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| 引用本文： | 周梅,张志敏,邓云凯.星载SAR原始数据压缩模块的FPGA实现[J].现代雷达,2006,28(2):43-45. |
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| 作者姓名： | 周梅 张志敏 邓云凯 |
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| 作者单位： | 1. 中国科学院电子学研究所,北京,100080;中国科学院研究生院,北京,100039
2. 中国科学院电子学研究所,北京,100080 |
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| 摘 要： | 分块自适应量化（BAQ）算法是目前最适于工程实现的合成孔径雷达（SAR）原始数据压缩算法。文中介绍了该算法的基本原理，针对星载SAR数据的实时传输，重点介绍了可变压缩比BAQ算法的数据压缩模块方案及其FPGA设计实现硬件压缩，并给出了仿真结果。用FPGA实现原始数据压缩灵活可靠，适合在星载SAR系统中应用。
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| 关 键 词： | 合成孔径雷达 分块自适应量化 原始数据压缩 现场可编程门阵列 |
| 收稿时间： | 2005-04-26 |
| 修稿时间： | 2005-09-27 |
Design and Implementation of Spaceborne SAR Raw Data Compression Using Block Adaptive Quantization with FPGA |
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| ZHOU Mei,ZHANG Zhi-min,DENG Yun-kai.Design and Implementation of Spaceborne SAR Raw Data Compression Using Block Adaptive Quantization with FPGA[J].Modern Radar,2006,28(2):43-45. |
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| Authors: | ZHOU Mei ZHANG Zhi-min DENG Yun-kai |
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| Affiliation: | 1. Institute of Electronics, Chinese Academy of Sciences, Beijing 100080, China;2. Graduate School of the Chinese Academy of Sciences, Beijing 100039,China |
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| Abstract: | Block Adaptive Quantization(BAQ) is the most efficient algorithm for Synthetic Aperture Radar(SAR) raw data compression.In this paper,the theory on this algorithm is introduced.Aiming at real-time data transmission for spaceborne SAR,a BAQ scheme of data compression module which allows a changing compression ratio is recommended.The hardware implementation by field programmable gate array and the result are also given.This method is suitable for spaceborne SAR systems. |
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| Keywords: | synthetic aperture radar block adaptive quantization raw data compression FPGA |
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