本文着重研究正交离散子波变换在非相干雷达船目标特征抽取中的应用。采用现场实录的四类船目标雷达视频回波数据进行实验，结果表明本文提出的方法运算简便，所抽取的特征具有典型性，数据压缩能力强。基于子波域特征提出了一种新的显著态回波的检测方法。 This paper focuses on the application of orthogonal discrete wavelet transform in target feature extraction of incoherent radar ships. The experimental data of four types of target radar video echoes recorded by the scene were recorded. The results show that the method proposed in this paper is simple, the extracted features are typical and the data compression ability is strong. Based on the wavelet domain feature, a new detection method of significant echo is proposed.