中国激光, 2020, 47 (9): 0909002, 网络出版: 2020-09-16
毫米波全息成像快速反向传播算法研究 
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Fast Backpropagation Algorithm for Millimeter-Wave Holographic Imaging
图 & 表
图 1. 毫米波全息成像示意图。(a)单站式成像;(b) MIMO成像
Fig. 1. Schematic diagram of millimeter-wave holographic imaging. (a) SISO imaging; (b) MIMO imaging
图 2. 三维以及二维重建降维策略示意图。(a)三维;(b)二维
Fig. 2. Illustration of the 3D and 2D dimensionality reduction strategies. (a) 3D; (b) 2D
图 5. 高分辨亚毫米波全息成像系统原理图以及实物图。(a)原理图;(b)实物图
Fig. 5. Schematic diagram and photo of the high resolution submillimeter wave holographic system. (a) Schematic diagram; (b) photo
图 6. 仿真金属手枪的光学图像及重建结果。(a)光学图像;(b) FFT重建结果;(c) BP重建结果;(d)~(f) DR-BP最临近插值dr分别取λ/2、λ/4和λ/8(从左到右)时的重建结果;(g)~(i) DR-BP线性插值dr分别取λ/2、λ/4和λ/8(从左到右)时的重建结果
Fig. 6. Optical image and reconstruction results of the simulated metal pistol. (a) Optical image; (b) FFT based reconstruction result; (c) BP reconstruction result; (d)-(f) reconstruction results of DR-BP nearest interpolation (the values of dr equal λ/2,λ/4 and λ/8 from left to right); (g)-(i) reconstruction results of DR-BP linear interpolation (the values of dr equal λ/2, λ/4 and λ/8 from left to right)
图 7. 正交阵列全息成像仿真示意图以及BP算法重建图像。(a)仿真示意图;(b)重建图像
Fig. 7. Simulation schematic diagram of the orthogonal array holographic imaging and reconstructed image of BP algorithm.(a) Simulated image; (b) reconstructed image
图 8. 正交阵列FEKO电磁仿真成像实验DR-BP重建结果。(a)~(c)最临近插值方法dr分别取λ/2、λ/4和λ/8(从左到右)时的重建结果;(d)~(f)线性插值方法dr分别取λ/2、λ/4和λ/8(从左到右)时的重建结果
Fig. 8. DR-BP reconstruction results of orthogonal array imaging based on FEKO simulation (the values of dr equal λ/2,λ/4 and λ/8 from left to right). (a)-(c) Nearest interpolation; (d)-(f) linear interpolation
表 1算法重建时间对比
Table1. Reconstruction time comparison of different algorithmss
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表 2全息图像的结构相似性评价
Table2. SSIM values of the reconstructed holographic images
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牛轶杰, 柳兴, 乔灵博. 毫米波全息成像快速反向传播算法研究[J]. 中国激光, 2020, 47(9): 0909002. Niu Yijie, Liu Xing, Qiao Lingbo. Fast Backpropagation Algorithm for Millimeter-Wave Holographic Imaging[J]. Chinese Journal of Lasers, 2020, 47(9): 0909002.
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