基于分形的海杂波特性及目标检测方法

Fractal-based Sea Clutter Characteristics and Target Detection Method

在真实海杂波数据中叠加具有多普勒频率的模拟目标,以此构成纯杂波样本和目标加杂波样本,对这些样本进行盒维数分析.结果表明,目标加杂波的盒维数大小与目标的多普勒频率有一定的变化关系,这种变化关系为海杂波中的小目标检测提供了一种新的途径.

The target with specified Doppler frequency is mixed in the real sea clutter to form two kinds of samples: pure sea clutter samples and sea clutter plus target ones. Then, based on the fractal theory, the box dimensions of these samples are analyzed. The analysis results show that the box dimension has a certain relationship with the target Doppler frequency, which can provide a new approach for small target detection in sea clutter.