一种基于谱认知的海杂波中运动目标检测方法

海面运动运动目标的检测中,不同海杂波环境需要不同的信号处理方法,本文提出一种以杂波谱峰值杂噪比为环境认知参数的自适应目标检测算法.该算法首先对杂波谱进行参数估计,再根据参数,选择频率域或频空域联合处理.其中:频空域处理方法先通过子空间分解实现海杂波的空间特性均衡,再进行海杂波的对消,提高了慢速小目标的检测能力.最后,通...

A Method for Detecting Moving Targets in Sea Clutter Based on Spectral Cognition

Different signal processing algorithms need to be used to detect moving sea surface targets in different sea clutter environments.This paper proposes an adaptive target detection method that uses the peak clutter-to-noise ratio of clutter spectrum as the environment cognitive parameter.With the proposed method,certain parameter of the sea clutter spectrum is estimated,and then either frequency processing or joint frequency-space processing is performed based on the obtained parameter.If the joint frequency-space processing approach is used,subspace decomposition is performed to achieve spatial characteristic balance of sea clutter,and then cancellation of sea clutter is performed,improving the performance in detecting slow and small targets.At last,the flowchart of the proposed method is described through a real data processing case,which also proves the feasibility of the proposed method.