提出了一种应用准静态技术,结合快速多极子算法计算任意形状的运动目标多普勒信号的方法。对目标的几种典型的微动多普勒信号进行了仿真,并应用高分辨时频分析算法对仿真得到的微多普勒信号进行了分析,提取出了微多普勒瞬时频率,通过与相应微动规律的点目标微多普勒瞬时频率进行对比,表明二者具有相同的变化规律,从而证明文章提出的方法是有效的。 A method of computing Doppler signals of moving targets of arbitrary shape by using quasi-static technique combined with fast multipole algorithm is proposed. Several typical micro-Doppler signals of the target are simulated, and the micro-Doppler signals obtained by the simulation are analyzed by using high-resolution time-frequency analysis algorithm to extract the micro-Doppler instantaneous frequency, The comparison of the micro-Doppler instantaneous frequency of the target with the corresponding fretting law shows that the two have the same variation rule, which proves that the proposed method is effective.