基于多核CPU的雷达导引头数字化实时仿真研究  

Research on Digital Real-Time Simulation of Multi-Core CPU-Based Radar Seeker

作　　者：苏灏杨 夏伟杰 吴雪[1,2] 王宇[1,2] SU Haoyang;XIA Weijie;WU Xue;WANG Yu(Key Laboratory of Radar Imaging and Microwave Photon Technology,Ministry of Education,Nanjing 210016;College of Electronic Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016)

机构地区：[1]雷达成像与微波光子技术教育部重点实验室,南京210016 [2]南京航空航天大学电子信息工程学院,南京210016

出　　处：《遥测遥控》2025年第2期92-99,共8页Journal of Telemetry,Tracking and Command

基　　金：国家自然科学基金(62301260)。

摘　　要：雷达导引头仿真系统在导引头精确打击目标的过程中起着重要的作用。随着仿真系统的复杂度不断提升以及数据处理需求的日益增长,传统的串行计算仿真技术已难以满足雷达导引头数字仿真系统对实时性的严格要求。针对现有雷达导引头仿真过程中耗时过长的问题,本文提出了一种全流程的数字化实时仿真方法。首先,将传统全流程仿真架构的核心部分——接收控制系统指令、接收回波仿真数据、SAR(Synthetic aperture Radar,合成孔径雷达)成像处理、成像结果上传与界面动态更新进行流水并行化。其次,利用OpenMP(开放式多处理)多核并行模型,对SAR成像算法主要步骤进行多核CPU(Central Processing Unit,中央处理器)并行处理。然后,引入高性能数学计算库FFTW3(西方最快傅里叶变换第3版)快速实现成像算法的傅里叶变换,加快SAR成像算法处理速度。最后仿真结果表明:该全流程的设计方法相较于传统的串行仿真,加速比达到100倍左右,同时加速前后的SAR图像相似度接近于1。在处理精度和效果一致的前提下,该方法能够完成雷达导引头系统的全流程实时仿真,具有较好的工程应用前景。The radar seeker simulation system is crucial for the process of the seeker striking the target accurately.As simulation systems become more complex and data processing demands grow,traditional serial computing methods can no longer satisfy the strict real-time requirements of radar seeker digital simulations.To address the challenge of lengthy simulation times in the radar seeker simulation process,this paper proposes a full-process digital real-time simulation method.Firstly,the core components of the traditional full-process simulation architecture—receiving and controlling system commands,simulating echo data reception,SAR imaging processing,uploading imaging results,and dynamically updating the user interface—are restructured into a pipeline-based parallelization framework.Secondly,the SAR imaging algorithm's primary steps are parallelized using the OpenMP multi-core parallel programming model on multi-core CPUs.Furthermore,the high-performance mathematical computing library FFTW3 is introduced to quickly realize the Fourier transform of the imaging algorithm to accelerate the processing speed of the SAR imaging algorithm.Finally,the simulation results show that compared with the traditional serial simulation,the acceleration ratio of the whole process design method reaches about 100 times,and the similarity of SAR images before and after acceleration is close to 1.Under the premise of consistent processing accuracy and effect,this approach enables full-process real-time simulation of the radar seeker system,showcasing promising prospects for practical engineering applications.

关 键 词：雷达导引头 SAR仿真 多核CPU 并行计算 实时仿真 

分 类 号：TN955[电子电信—信号与信息处理]