截断巴克码的旁瓣抑制研究

The Study on Truncated Barker Code Sidelobe Suppression

在研究截断巴克码与 13位巴克码匹配滤波器的脉压结果的基础上 ,提出一种简单的绝对值相加的截断巴克码旁瓣抑制结构。在保证 13位巴克码的峰值旁瓣电平比 (PSL)的前提下 ,对 12～ 7位截断巴克码都能获得良好的脉压结果 ,峰值旁瓣电平比接近 1/ P,其中 P为截断巴克码的码长。这种新型的截断巴克码旁瓣抑制结构的特点是结构简单 ,容易实现 。

Based on the analysis of the pulse compression of truncated Barker code, a simple method named absolute value add structure is proposed to reduce the range sidelobe of truncated Barker code. The new structure ensures the peak sidelobe lever (PSL) of 13 bits Barker code. Compared with the conventional match filter the PSL of the 12～7 bits truncated barker code can be reduce to about 1/P by the structure, where P equals the length of truncated barker code. This novel structure is quite simple and easy to implement at the cost of large SNR loss and hardware complexity.