摘要
干扰能量检测是干扰抑制处理的基础,普通的能量检测算法性能容易受到背景噪声不确定性的影响.提出一种自适应干扰能量检测算法,该算法基于频域干扰抑制算法模型,通过背景噪声估计设定信号处理门限,自适应地调整校标值.仿真结果表明,该算法能够消除背景噪声不确定性对干扰检测性能的影响,窄带干扰的检测性能远好于普通能量检测算法.
Interference energy detection is the foundation for the algorithm of interference suppression.General energy detection algorithm is simple and easy to be implemented,but the performance is easily influenced by the uncertainty of the background noise.An adaptive frequency domain energy detection algorithm which was based on frequency domain interference suppression algorithm model was presented in this paper.This algorithm set the threshold of signal through estimating the background noise power,adjusted the reference value adaptively based on the processed signal power.The simulation results showed that this algorithm could effectively eliminate the influence of the uncertain background noise.The performance of detection was much better than general energy detection algorithm extremely under narrowband interference condition.
出处
《安徽大学学报（自然科学版）》
CAS
北大核心
2016年第1期59-63,共5页
Journal of Anhui University(Natural Science Edition)
基金
国防科工局民用航天"十二五"预先研究项目(D030202)
关键词
干扰抑制
背景噪声
自适应
干扰能量检测
interference suppression
background noise
adaptation
interference energy detection
