一种基于数字综合算法的MTD滤波器设计方法

利用空间阵列方向图合成中的数字综合算法 ,提出了一种新的MTD滤波器设计方法。该方法通过在滤波器频率响应的副瓣区放置大量的干扰信号 ,改变干扰信号的功率强度 ,从而自适应地控制滤波器频率响应的副瓣电平。这种方法所设计的MTD滤波器 ,其频率响应不仅在零频附近有宽而深的零陷 ,而且在其他副瓣区域可以为任意形状 ,具有较好的实用性。设计实例证实了这种方法的有效性。

A Design Method of MTD Filters Based on the Numerical Synthesis Algorithm

This paper proposes a new method for the design of the MTD filters by utilizing the numerical synthesis algorithm for pattern synthesis in arrays. A lot of interferers are injected at the sidelobe region of the frequency response of the filter. The powers of the interferers are then adjusted iteratively until the desired sidelobe behavior is achieved. The frequency response of the filter designed by this method not only has wide and deep null at the zero region, but also can get arbitrary sidelobe behavior. Therefore, it is very practical. The design examples are presented to show that the method is effective.