利用复数经验模态分解抑制高频地波雷达射频干扰的工程应用

Applications of RFI Suppression in HFGW Radar Based on CEMD

为了抑制高频地波雷达(high frequency ground wave radar,HFGWR)射频干扰(radio frequency interference,RFI),提出了复数经验模态分解(CEMD)方法,在抑制射频干扰的同时,最大程度上保留有用信号。通过模拟及实测数据的验证分析,该方法在不损失有用信号的基础上有效抑制了射频干扰,且处理速度快,满足高频地波雷达实时工作要求。

The Complex Empirical Mode Decomposition （CEMD） algorithm is presented for suppressing RFI in HFGWR. It has achieved the suppression of interference while retaining the useful signal to the biggest extent. Analysis of simulated data and measured data shows that this method is effective to suppress the RFI without losing of useful signal. Moreover, the algorithm is able to meet the real-time processing of the radar system.