摘要
推导了一种在基带实现的时域宽带数字波束形成(DBF)方法,并利用sigmoid函数来实现分数滤波,得到精确的时延量来减小或消除时域方法中的色散效应。这种方法充分利用了sigmoid函数的宽误差范围和小误差迭代继续的特点,来适应基带时域宽带DBF的特点,从而改善了波束性能和算法效率。
This article deduces a time-domain broadband digital beam forming（DBF）method based on baseband,and uses sigmoid function to implement fractional filtering,obtains accurate time delay to reduce or eliminate the dispersion effect in time-domain method.This method makes full use of the characteristics of sigmoid function such as wide error range and continuative iteration of small error to adapt the characteristics of time-domain broadband DBF algorithm based on baseband,thereby improves the beam performance and algorithm efficiency.
出处
《舰船电子对抗》
2015年第1期27-31,共5页
Shipboard Electronic Countermeasure
