基于IMF能量分布重构的目标检测技术

Target Detection Technology Based on the Reconstruction of Energy Distribution

摘要:

为提高海杂波中慢速目标的检测性能,提出了一种基于 IMF能量分布重构的目标检测技术。该算法对原始信号尖峰区域经经验模态分解后得到的固有模态函数进行分段数据重构,计算前端 IMF分量与后端 IMF分量的能量比,并将其输入非参量检测器中进行目标检测。研究表明,相比于海杂波单元,目标单元尖峰区域有更小的前后端 IMF分量能量比,适用于慢速目标的检测。

Abstract:

In order to improve the detection performance of slow target in sea clutter, target detection technology based onthe reconstruction of energy distribution was proposed. Firstly, for getting the intrinsic mode function (IMF) after data re?construction, the spiky area of the original signal was decomposed by using empirical mode decomposition (EMD), then theenergy ratio of IMF was calculated and target was detected by nonparametric detector. The results show that, comparedwith sea clutter bin, the energy ratio of IMF is bigger in target bin, and the technology is suitable for slow target detection.