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针对航海雷达在强杂波环境下对弱小目标检测能力不足的情况,提出一种基于FCM(Fuzzy-C-Means)聚类的雷达中频信号检测方法.对雷达中频信号进行小波分解,提取低频子带作为聚类样本集,利用FCM聚类方法,对同次脉冲回波相邻单元进行聚类分析,通过设定门限来判定目标.仿真结果表明,该方法可以改善输出信噪比,实现对目标的有效检测.
Aiming at the insufficiency of marine radar detection ability in weak clutter environment, this paper proposes a method of radar intermediate frequency signal detection based on FCM (Fuzzy-C-Means) clustering.Wavelet decomposition of radar intermediate frequency signal, Band as a clustering sample set, using FCM clustering method to cluster the adjacent units of the same pulse echo and determine the target by setting the threshold. Simulation results show that this method can improve the output signal to noise ratio, Effective detection of the target.