A three dimension polarization filtering algorithm is put forward to suppress th e skywave interference in HF ground wave radar.

以高频地波雷达为背景，提出了三维极化滤波方法，此方法能够滤除二维极化滤波不能抑制的干扰，扩大极化滤波的干扰抑制范围。

A new variable step-size LMS adaptive filtering algorithm is presented, which makes use of the intercorrelation function of the relative output error signal to control the new variable step-size.

针对上述问题，提出了一种新的变步长LMS自适应滤波算法，它采用相对的误差互相关函数来控制步长更新。