星载SAR原始数据压缩模块的FPGA实现

Design and Implementation of Spaceborne SAR Raw Data Compression Using Block Adaptive Quantization with FPGA

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。

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 spacebome SAR systems.