一、前言本文中所关注的接收机是一种应用于电子支援措施(ESM)中截获雷达信号的接收机,即利用测量所截获信号的参数和与位置有关的信息,来确定辐射源的类型及其功能。用超外差接收机来截获飞机上、舰船上、水下和岸站的雷达信号始于第二次世界大战。由用听觉对信号分类发展为用加设一个示波器来分类,这样就可以测量脉冲宽度和脉冲重复间隔(PRI)。 I. INTRODUCTION The receiver of interest in this article is a receiver used in intercepting radar signals in electronic support measures (ESM) by using the parameters of the intercepted signal and position-related information to determine the type of radiation source And its function. The superheterodyne receiver used to intercept aircraft, and the radar signals on ships, underwater and shore stations began in World War II. Classification of the signal by auditory evolvement is categorized by the addition of an oscilloscope, which allows measurement of pulse width and pulse repetition interval (PRI).