A two-dimensional (2D) deconvolution beam imaging method based on distance and azimuth in active imaging sonar is proposed. First, the circular array is used to perform conventional beamforming for echo signal of each distance bin to obtain the distance and azimuth 2D acoustic image in active imaging sonar. Then, high-resolution azimuth information is obtained by using azimuth dimension deconvolved beamforming, which effectively improves the accuracy of target azimuth estimation. And the image in the distance dimension is deconvolved to obtain the impulse response function of the target reflection and accurately estimate the time delay of target reflection or distance information and produces high-resolution imaging results. Finally, the proposed method is validated by simulation and data, which show that the 2D deconvolution based on distance-azimuth has higher resolution and lower sidelobe imaging effect than the deconvolution based on the angle dimension.

提出了一种基于距离和方位角的主动成像声纳二维（2D）解卷积波束成像方法。首先，利用圆形阵列对每个距离仓的回波信号进行常规波束成形，获得主动成像声纳中的距离和方位二维声学图像。然后，利用方位维去卷积波束形成获得高分辨率的方位信息，有效提高了目标方位估计的精度。并对距离维度的图像进行反卷积，得到目标反射的脉冲响应函数，准确估计目标反射或距离信息的时延，产生高分辨率成像结果。最后，通过仿真和数据验证了所提出的方法，