[author_cn_name].[cn_title][J].空军工程大学学报:自然科学版,[year_id],[volume]([issue]):[start_page]-[end_page] 调频连续波雷达自旋目标干涉三维成像方法- Interferometric 3D Imaging for Rotating Targets in LFMCW Radar
文章摘要
罗迎,李汪洋,孙玉雪.调频连续波雷达自旋目标干涉三维成像方法[J].空军工程大学学报:自然科学版,2019,20(1):73-78
调频连续波雷达自旋目标干涉三维成像方法
Interferometric 3D Imaging for Rotating Targets in LFMCW Radar
  
DOI:
中文关键词: 调频连续波雷达  自旋目标  微多普勒效应  干涉三维成像
英文关键词: LFMCW radar  rotating targets  micro doppler effect  interferometric 3D imaging
基金项目:国家自然科学基金(61571457);陕西省青年科技新星计划项目(2016KJXX-49)
作者单位
罗迎,李汪洋,孙玉雪 空军工程大学信息与导航学院,西安,710077 
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中文摘要:
      相比脉冲体制雷达,调频连续波雷达具有功耗低、成本低、重量轻等优点,发展前景广阔,同时雷达三维成像技术可为目标的分类识别提供重要的特征信息。但是自旋目标在调频连续波信号条件下会产生一维距离走动以及回波相位的改变,这对干涉三维成像产生了影响。针对自旋目标在线性调频连续波雷达中的干涉三维成像技术进行了研究,分析了自旋产生的回波调制效应与相位变化,结合分析所得的调制前后目标在距离 慢时间像上微动特征的变化关系与扩展Hough变换提取的微动参数,解决了干涉三维成像中由于回波调制效应导致的目标坐标畸变问题,提出了基于调频连续波雷达的自旋目标干涉三维成像的具体处理方法。仿真实验证明,所提方法有效提高了自旋目标的干涉三维成像质量。
英文摘要:
      FMCW (Frequency Modulated Continuous Wave) radar has many advantages, such as low power consumption, low cost, light in weight and so on. It has a broad prospect of development. Meanwhile, three dimensional (3D) imaging technology of radar can provide important feature information for target recognition. However, the rotating targets will induce the deviation of the range profile and phase changing in FMCW signal, which has an effect on the interferometric 3D imaging. In this paper, the interferometric 3D imaging technique for rotating targets in LFMCW (Linear FMCW) radar is studied. The echo modulation effect and phase chaning caused by rotation is analyzed. The distortion of coordinates caused by echo modulation effect in interferometric 3D imaging is solved. The method of interference 3D imaging processing in LFMCW radar for rotating targets is proposed. Simulation results show that the proposed method improves the interferometric 3D imaging results of the rotating targets effectively.
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