一种基于模数混合的强干扰抑制方法
A strong interference suppression method based on analog-digital hybrid
李立春 1魏峰 1郑磊1
作者信息
- 1. 信息工程大学通信工程系,河南郑州450002
- 折叠
摘要
本文提出了一种新型强干扰抑制方法.该方法通过改变接收机前端传统采样方式,以及自适应调整模拟端测量信号,可在采样前抑制强干扰,从而达到从大动态范围混合信号中分离出微弱目标信号的目的.理论分析与仿真都表明:当干扰信号功率与微弱目标信号功率差大于接收系统瞬时动态范围时,采用该方法可有效抑制干扰从而大幅提高微弱目标信号的采样精度.
Abstract
In this paper,a new strong interference suppression method is proposed to improve the receiving performance when the power difference between the strong interference signal and the weak aiming signal is larger than the dynamic range of the system.By introducing a new sampling circuit and adapting the measure signal at the front-end,the system can suppress strong interference before signal sampling.Both theoretic analysis and simulation show that this method can suppress the interference effectively and improve the sampling accuracy of the weak object signal obviously when the power difference between the strong interference and the weak object signal is larger than the dynamic range of the system,
关键词
强干扰抑制/分辨率/采样率/模数混合Key words
strong interference suppression/sampling accuracy/sampling rate/analog-digital hybrid引用本文复制引用
出版年
2013
NETL
NSTL
维普
万方数据