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Research Progresses in Radar Feature Extraction, Imaging, and Recognition of Target with Micro-motions
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摘要: 微动目标的雷达特征提取、成像与识别技术是雷达目标精确识别领域极具发展潜力的研究方向之一。该文首先简要阐述了微动的相关概念，然后综述了近年来微动目标回波建模、微动特征提取、微动目标成像以及基于微动特征的雷达目标分类与识别等方面的研究现状，并介绍了几种典型前沿应用，最后对微动目标雷达特征提取、成像与识别的研究发展趋势进行了展望。Abstract: The technique of radar feature extraction, imaging, and recognition of target with micro-motions has become one of the most potential research directions in the field of radar target accurate recognition. In this paper, the concept of micro-motion is first introduced briefly. Subsequently, the achievements of echo modeling, feature extraction, imaging, and identification of micro-motion targets are summarized. Several typical frontier applications are then introduced. Finally, the future development trends of the research are discussed.
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Key words:
- Micro-motion /
- Micro-Doppler /
- Feature extraction /
- Radar imaging /
- Target recognition
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图 1 微动目标暗室观测回波分析
Figure 1. Echo signal analysis results of micro-motional targets in the anechoic chamber
图 3 多分量SFM信号及其SFMFBT分离结果
Figure 3. Multi-component SFM signal and its SFMFBT separation results
图 4 空间目标干涉式3维成像原理及结果
Figure 4. Three-dimensional interferometric imaging principle and results of space targets
图 5 不同人步行姿态下获得的时频谱图(X波段)
Figure 5. Time-frequency spectrum of different walking people (X band)
表 1 分布式MIMO雷达系统(2个发射阵元和4个接收阵元)每对收发阵元获得的有3个旋转散射点目标的微动特征
Table 1. Micro-motion feature of a rotating target with three scatterers received by transceivers in a distributed MIMO radar system (2 transmitters and 4 receivers)
T R 1 2 3 4 1 
2 
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