基于多普勒谱特征的海杂波背景下小目标检测

海杂波中的小目标检测是雷达信号处理中较为复杂的问题之一。该文在分析海杂波多普勒谱特性的基础上,提出了基于联合瑞利分布的海杂波多普勒谱统计模型和描述多普勒谱扩展程度的波形熵特征,并给出了海杂波背景下的小目标检测算法。基于加拿大IPIX雷达实测数据的检测结果,证实了文中算法的有效性。

Small Target Detection in Sea Clutter Background Based on Doppler Spectrum Characteristics

Small target detection in sea clutter is a very important problem in radar signal processing.In this paper,from the analysis of sea clutter doppler spectrum characteristics,we present a sea clutter statistical model based on joint rayleigh distribution,and a waveform entropy feature to describe the energy extend degree of sea clutter Doppler spectrum.On basis of these,the small target detectors in sea clutter are presented.The detectors have been verified with the data collected by McMaster IPIX radar at the east coast of canada.