基于方向小波变换的SAR图像目标方位角估计

Pose Estimation for SAR ATR Based on Directional Wavelet Transform

在合成孔径雷达(SAR)自动目标识别中,目标成像的方位信息是一个非常重要的特征。文中针对SAR图像特点,提出了一种基于方向小波变换的SAR图像目标方位角估计方法,给出了方向小波角度-能量谱公式,利用能量最大准则实现方位角估计。采用MSTAR SAR实测数据进行的实验表明本文方法是有效的,方向小波变换更能反映出目标图像的方位特征。

A pose estimation method for SAR ATR based on directional wavelet transform is proposed in this paper.First,the target feature is analyzed after segmenting a target from background clutter.Then,the angular-wavelet energy spectrum is derived to estimate pose of targets.Experimental results based on MSTAR datasets show that this approach can extract the pose information of SAR target better and the estimation accuracy is satisfactory.