针对低空飞行目标轨迹估计问题,提出了一种单传声器阵列的目标运动轨迹估计方法。该方法利用窄带信号的多普勒效应估计出匀速直线运动目标飞行参数,结合波达方向估计计算目标的轨迹方向、水平偏置和高度,依据几何模型确定其运动轨迹,并对信号传播时延造成的估计误差进行修正。仿真和实验结果验证了算法有效性,实现了小孔径单声阵列对目标轨迹的估计。 Aiming at the low-altitude target trajectory estimation problem, a method of target trajectory estimation of single-microphone array is proposed. This method uses the Doppler effect of the narrowband signal to estimate the flight parameters of the uniform linear target. The trajectory direction, horizontal offset and height of the target are calculated according to the DOA estimation. The trajectory of the target is determined according to the geometric model and the signal propagation delay Caused by the estimated error correction. The simulation and experimental results verify the effectiveness of the algorithm and realize the estimation of the target trajectory by the small aperture mono array.