两种新的抑制高频雷达中Es层干扰的自适应算法

Two New Adaptive Algorithms Using for the Cancellation of the Es Layer Clutter in HF Radar

摘要: 提出了两种新的抑制Es层杂波的自适应对消算法,分别是频域瞬时值LMS算法和归一化频域瞬时值LMS算法。频域瞬时值LMS算法是利用辅助天线输出的Es层杂波瞬时值来估计主天线当前输出中的Es层杂波成分,可以更大程度上抑制Es层杂波。而归一化频域瞬时值LMS算法则是在频域瞬时值LMS算法的基础上增加归一化的过程,可以大大缩短自适应过程的收敛时间。

Abstract: In this paper,two new adaptive algorithms are presented,which are Doppler-domain instantaneous valued LMS(Least Mean Square) algorithm and normalized Doppler-domain instantaneous valued LMS algorithm.The Doppler-domain instantaneous valued LMS algorithm is using the instantaneous value of the Es layer clutter in the auxiliary antenna outputs to estimate the Es layer clutter component in the main antenna output,which can suppress the Es layer clutter mostly.And the normalized Doppler-domain instantaneous valued LMS algorithm is adding a normalized procedure on the Doppler-domain instantaneous valued LMS algorithm,which can lessen the convergent time of the adaptive procedure obviously.