由于AUV系统背景噪声比较复杂,所接收到的信号往往会被噪声污染,影响到目标检测与分类结果的有效性和可靠性。因此,提出一种基于改进Surfacelet变换去噪的方法。海上试验表明:提出的这种去噪方法在AUV系统的应用中得到了较为满意的去噪结果。 Due to the complexity of AUV system background noise, the received signals are often contaminated by noise, which affects the validity and reliability of the target detection and classification results. Therefore, a method of denoising based on improved Surfacelet transform is proposed. Experiments at sea show that the proposed denoising method has a satisfactory denoising result in the application of AUV system.