加权空-频时间反转多目标成像  

Weighted Space-Frequency Time-Reversal Imaging for Multiple Targets

作　　者：呼斌 李飞[1] 王伟[1] 杜自成[1] HU Bin;LI Fei;WANG Wei;DU Zicheng(Xi'an Electronic Engineering Research Institute,Xi'an 710100)

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2023年第2期10-16,共7页Fire Control Radar Technology

摘　　要：为了解决在空-频(SF)时间反转(TR)算法对多个目标进行定位成像时,信号子空间选择不同秩时造成的不稳定性,本文提出了一种被称为W-SF-TR的改进的SF-TR算法。新算法通过对噪声子空间的向量进行加权来提供成像稳定性。仿真结果表明,W-SF-TR算法显著降低了选择不同秩时的成像灵敏度,提高了图像的分辨率。To address the problem of imaging instability caused by different rank selection of signal subspaces in TR imaging when space-frequency(SF)time-reversal(TR)algorithm performs imaging for multiple targets,a modified SF-TR,termed as W-SF-TR,was proposed in this paper.The vectors of noise subspace were weighted to provide the imaging stability by using the proposed algorithm.The simulation results show that W-SF-TR significantly reduces the imaging sensitivity when choosing different ranks,and also improves the image resolution.

关 键 词：空-频多站数据矩阵(SF-MDM) 多目标TR成像 加权多信号分类 

分 类 号：TN95[电子电信—信号与信息处理]