红外与毫米波学报, 2020, 39 (6): 709, 网络出版: 2021-01-20
基于单通道MIMO雷达的毫米波安检成像
Millimeter wave security imaging based on single-channel MIMO radar
图 & 表
图 4. 单通道MIMO雷达双重码分复用的二次码分复用过程
Fig. 4. The secondary CDM process of the dual-CDM in single-channel MIMO radar
图 5. 两种典型的解复用过程及其结果示意图，其中时域编码信号(a)是当前要提取的信号，(b)是当前解复用信号，(c)是当前不需提取的信号
Fig. 5. Schematic diagram of two typical de-multiplex processes and their results, where the time-domain encoded signal (a) is the one to be extracted this time, (b) is the de-multiplex code sequence this time, and (c) is the one not to be extracted this time
图 6. 原始m序列、完全移位正交码与失配滤波器码的相关输出比较
Fig. 6. Comparison of the correlation output between m-sequence, TSOC and MMFC
图 7. m序列、完全移位正交码与失配滤波器码的解复用输出信噪比
Fig. 7. Comparison of the defined SNR between m-sequence, TSOC and MMFC
图 10. 单通道2×2 MIMO雷达成像过程中的一个示例观测通道信号仿真结果，其中：(a)是接收到的信号，(b) 是二次编码后的信号，(c)是聚合信号，(d)该信号的其中一个解复用信号，(e)是该信号的另一个解复用信号，(f)是(d)与(e)结合形成的该路最终解复用信号
Fig. 10.
图 11. 所仿真单通道MIMO雷达在水平-距离方向的点扩展函数
Fig. 11. The point spread function of the simulated single-channel MIMO radar in distance-horizontal dimension
图 12. (a)成像系统(b)移相器的照片以及(c)系统原理框图
Fig. 12. Photograph of (a) the imaging system prototype and (b) the phase shifters as well as the (c) block diagram of this system
图 14. (a)目标照片；利用(b)m序列(c)TSOC(d)MMFC进行的单通道MIMO雷达成像
Fig. 14. (a) Photograph of the target; Single-channel MIMO radar imaging by (b) m-sequence (c) TSOC (d) MMFC
表 1长度为15的m序列Hadamard积结果表
Table1. List of the Hadamard product results by -length m-sequences
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马朝辉, 王晶阳, 敬汉丹, 刘凡, 胡伟东, 吕昕. 基于单通道MIMO雷达的毫米波安检成像[J]. 红外与毫米波学报, 2020, 39(6): 709. Zhao-Hui MA, Jing-Yang WANG, Han-Dan JING, Fan LIU, Wei-Dong HU, Xin LYU. Millimeter wave security imaging based on single-channel MIMO radar[J]. Journal of Infrared and Millimeter Waves, 2020, 39(6): 709.
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