基于EMD和盒维数的固定微弱目标检测

Stationary and Weak Target Detection Based on EMD and Box Dimension

为了对强海杂波中的固定微弱目标进行检测,论文提出了基于EMD和盒维数的目标检测算法。该算法首先采用EMD方法在时域内提取海杂波的低频分量,并计算低频分量的盒维数,然后利用盒维数对固定微弱目标进行检测。与仅基于盒维数的微弱目标检测算法相比,该算法扩大了固定目标对海杂波盒维数的影响,明显提高了对固定微弱目标的检测概率。

A new approach based on EMD and box dimension is proposed in this paper to detect the stationary and weak target. Firstly EMD method is used to extract the low frequency component of the sea clutter and the box dimension of the low frequency component is calculated.Then with the box dimension the stationary and weak target is detected.Compared with the approach using the box dimension only,the effect of the stationary and weak target on the box dimension of the sea clutter is greater and the probability of the stationary and weak target detection is much bigger with this approach.