基于OpenMP的SAR距离多普勒成像算法的研究与实现  

Study and Realization of Synthetic Aperture Radar Imaging Range-Doppler Algorithm Based on OpenMP

作　　者：张艳华[1] 魏桂敏[2] 

机构地区：[1]天津科技大学计算机与信息工程学院,天津300222 [2]天津科技大学计算中心,天津300222

出　　处：《计算机与现代化》2011年第8期71-73,95,共4页Computer and Modernization

基　　金：天津科技大学科学研究基金资助项目(20090211)

摘　　要：阐述OpenMP的特点与使用方法,分析合成孔径雷达距离多普勒成像算法,得到该算法中适合利用OpenMP并行处理的部分:傅里叶变换和逆傅里叶变换,并将OpenMP应用到傅里叶变换和逆傅里叶变换中。将原雷达距离多普勒成像算法,设计成可并行化执行的程序。采用pragma omp for和pragma omp section两种并行设计方法,通过创建多个线程,缩短程序执行时间。实验证明,采用双核处理器并行化的雷达成像算法,图像生成时间缩短到原来时间的67%左右,可有效地提高处理效率,充分挖掘处理器的处理能力。The characteristic and usage of OpenMP are explained.And the synthetic aperture radar imaging range-Doppler algorithm is analyzed for getting the most appropriate operations which can be executed by OpenMP.The original synthetic aperture radar imaging range-Doppler algorithm is converted to a parallel executable program on OpenMP with two parallel computing methods： pragma omp for and pragma omp section.Multi-threads are established to reduce the executive time.It is proved that executive time is reduced to 67%.The processor＇s efficiency is improved.

关 键 词：合成孔径雷达成像 距离多普勒成像算法 OPENMP 并行 

分 类 号：TN957.52[电子电信—信号与信息处理]