LFMCW雷达运动目标检测与距离速度去耦合
MTD and Range-Velocity Ddcoupling of LFMCW Radar
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摘要: 为解决LFMCW雷达运动目标的检测和距离速度去耦问题,该文提出了一种将动目标检测与频域配对相结合的MTD-领域配对方法。该方法通过MTD实现对不同模糊速度目标的检测和分类,以简化差拍信号频谱,然后利用对称三角线性调频连续波上/下扫频段多普勒频移的对称性,实现动目标距离速度去耦合。仿真结果证明了该方法的有效性。Abstract: To solve the problem of Moving Target Detection (MTD) and range-velocity decoupling in LFMCW Radars, a method combining MTD with frequency domain pairing is proposed. The method realizes detection and classification of moving targets with different ambiguous velocities via MTD in order to simplify the spectrum of beat signal, then eliminates moving targets range-velocity coupling based on the symmetry of the Doppler shift between positive and negative frequency sweep in triangular frequency modulation continu- ous waves. The effectiveness of the method is demonstrated by simulations.
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杨建宇.LFMCW雷达信号模糊函数分析.信号处理,2002:18(1),39-42.[2]徐涛,金昶明,孙晓玮,夏冠群.一种采用变周期调频连续波雷达的多目标识别方法.电子学报,2002,30(6):861-863.[3]Yang Jianyu, Huang Shunji. Moving target indication of LFMCW radar for clutter rejection.Int. Symp. on Noise and Clutter Rejection in Radars and Imaging Sensors, Kyoto, Japan, 1989:585-589.[4]A.G. Stove. Linear FMCW radar techniques. IEE Proc.-F: Radar and Signal Processing, 1992,139(5): 343-340.[5]张立志,汪学刚,向敬成.线性调频连续波雷达的动目标显示.信号处理,2000,16(3):262-266. -
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