针对时空统计特性的箔条云半实物射频仿真  

Reproducing of the Spatiotemporal Statistical Characteristics in RFSS for Chaff Clouds

作　　者：唐波[1] 鲁嘉淇 郭琨毅[2] 盛新庆[2] TANG Bo;LU Jia-qi;GUO Kun-yi;SHENG Xin-qing(School of Computer and Communication Engineering,University of Science and Technology Beijing,Beijing 100083,China;Institute for Radio Frequency Technology and Software,School of Integrated Circuit and Electronics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京科技大学计算机与通信工程学院,北京100083 [2]北京理工大学集成电路与电子学院射频技术与软件研究所,北京100081

出　　处：《电子学报》2023年第4期843-849,共7页Acta Electronica Sinica

摘　　要：本文针对箔条云半实物射频仿真(Radio Frequency Simulation System,RFSS)中的关键问题进行研究,给出了对箔条云进行半实物射频仿真时的三元组的馈电系数的计算公式.与对点目标的仿真不同,对箔条云的仿真更注重其散射场统计特性的复现.箔条云的空间随机分布和随机运动特性,表现为其回波的空间相关性和时间相关性.本文通过三元组馈电系数之间的相关性来仿真箔条云散射回波的空间相关性;通过差分重心公式的横向平移、径向相移以及时域滤波来仿真箔条云散射回波的时间相关性.数值模拟结果验证了所给出的箔条云射频仿真方法的有效性.这些工作为箔条云的半实物射频仿真提供了理论基础和分析框架.This paper studies the problems in the radio frequency simulation system(RFSS)for chaff clouds,and gives the method to calculate the feeding coefficients of the triad in RFSS.Compared with the point target simulation,chaff clouds simulation focuses on the reproducing of the statistical characteristics of echoes of chaff clouds.The random distribu⁃tion and the random motion of the dipoles in the chaff clouds will cause the spatial correlations and the temporal correla⁃tions of the back scattering wave of the chaff clouds.In this paper,it is shown that the characteristics of the spatial correla⁃tions can be reproduced through the correlations among the feeding coefficients of the transmitting units.And the character⁃istics of the temporal correlations can be reproduced through the difference mass-center equation,phase shifting in the range and filtering in the time domain.The numerical results have been given to validate the calculating method of the feeding co⁃efficients of the triad in RFSS for chaff clouds simulation.This work provides the analysis framework of the RFSS for chaff clouds theoretically.

关 键 词：射频仿真 箔条云 三元组 

分 类 号：TN95[电子电信—信号与信息处理]