在毫米波雷达目标探测中，目标微动部件的微多普勒效应会引起目标回波频谱扩展，线性调频信号的时频耦合会导致目标距离扩展，从而使得目标难以检测。文中首先通过建模仿真，研究了目标回波的特点，然后结合实测数据分析了其复杂性，在此分析基础上提出了边沿检测、均值滤波质心检测、闭运算质心检测等检测方法，最后通过实测数据处理验证了各种方法的性能。

For the target detection of millimeter wave radar the micro-Doppler effect induced by the micro-rotation parts of target spreads the spectrum of target echo, and the time-frequency coupling of the linear-frequency modulated signal extends the target in range, therefore the target is difficult to detect. In this paper, the features of target echoes are firstly investigated by modeling and simulation, then the complexity of measured data is analyzed. On the above basis of investigation, the edge-detection, mean-filter-centroid-detection, and close-operation-centroid-detection are presented and demonstrated using hte measured data.

TN957.51