SAR自动聚焦处理器的设计与实现  

Design and Implementation of SAR Autofocus Processor

作　　者：郝智泉[1] 王贞松[1] 

机构地区：[1]中国科学院计算技术研究所

出　　处：《计算机工程》2007年第10期255-257,260,共4页Computer Engineering

基　　金：国家自然科学基金资助项目(60303017);中科院技术创新项目

摘　　要：合成孔径雷达(SAR)成像具有数据量巨大、算法比较复杂等特点。如何实时实现SAR成像的相关算法是嵌入式高性能计算领域一个值得研究的问题。针对SAR成像中多普勒调频率估计的经典算法PGA算法,阐述了算法的实时化改进。介绍了基于FPGA的SAR自动聚焦处理器的系统级设计及PGA算法到FPGA逻辑实现的映射过程。Synthetic aperture radar（SAR）image has some common features such as huge data volume, relative complex algorithm. Realizing SAR image algorithm is worthy of being studied in the domain of embedded high performance computing（EHPC）. Some improvements of PGA algorithm and the classic autofocus algorithm are presented. The architecture of the autofocus processor based on FPGA and the principle of how to map the improved algorithm to FPGA architecture are discussed.

关 键 词：SAR 嵌入式高性能计算 相位梯度自聚焦 FPGA 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]