基于Chirp Scaling算法的相位补偿优化  

Phase Compensation Optimization Based on Chirp Scaling Algorithm

作　　者：石长振[1,2] 王贞松[1] 

机构地区：[1]中国科学院计算技术研究所,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《计算机工程》2011年第24期239-241,244,共4页Computer Engineering

基　　金：国家部委基金资助项目

摘　　要：针对Chirp Scaling算法相位因子表达式复杂、计算量过大的问题,提出一种适合于实时成像的相位补偿因子软硬件协同设计方法。该方法结合软件的灵活性和硬件逻辑处理的快捷性,能够快速实现相位因子的生成与补偿。理论分析与测试结果表明了该方法的高效性。The amount of computation is huge as a result of the Chirp Scaling（CS） algorithm＇s complicated phase factor expression. To solve this problem, a hardware-software co-design method which is based on phase compensation factor and suitable for real time image processing is proposed. Taking advantages of the feasibility of numerical calculation by software and the high efficiency of computation by programmable logic, it can generate and compensate the phase factor quickly and efficiently. Theory analysis and experimental results show the efficiency of the method.

关 键 词：CHIRP SCALING算法 软硬件协同设计 相位补偿因子 实时处理 流水线 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]