对超外差接收机的干扰技术研究

摘要

The superheterodyne receiver has frequency resolution,high sensitivity,wide dynamic range and large range of frequency measurement,etc. Due to its simple structure,high reliability,has become the necessary frequency measuring receiver in electronic intelligence reconnaissance. This article through to the superheterodyne receiver frequency measuring principle is derived,use LFM signal and SFCW signal to jamming the receiver ,in order to protect our radar signal,through simulation proof,compared the two kinds of signal interference effect.%超外差接收机具有频率分辨力高、灵敏度高、动态范围宽、测频范围大等特点，由于其结构相对简单，可靠性强，已经成为电子情报侦察中必备的测频接收机。通过对超外差接收机的测频原理进行推导建模，提出采用步进频率连续波和线性调频信号对其实施干扰，达到了保护己方雷达信号的目的，并通过仿真验证，对比了两种信号的干扰效果。