基于对应分析的高频地波雷达干扰检测方法

Interference detection method based on correspondence analysis for high frequency ground wave radar

针对高频地波雷达回波信号距离谱特征,采用对应分析法和聚类分析法实现干扰的自动检测.采用对应分析对信号进行时间域和距离域的特征分离,采用聚类分析对特征进行分类,自动识别射频干扰、电离层干扰、信号、噪声,确定干扰所在的时间和距离.利用该方法连续计算了三个月的雷达实测数据,获得了射频干扰和电离层干扰的变化特征.

According to characteristics of high frequency surface wave radar range spectrum,a new method of interference detection is proposed by using correspondence analysis and cluster analysis.The correspondence analysis separates the characteristic factors of range spectrum in time domain and range domain.The cluster analysis classifies the characteristic factors.And then automatic identify the radio frequency interference,ionospheric clutter,signal and noise.By using this method,three month radio frequency interference and ionospheric clutter characteristics from measured data is attained.