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第二次世界大战以来,由于雷达和远距离通信技术的发展,人们对于各种噪声、干扰等随机信号的研究目益重视.随着信息论,特别是抗干扰接收(又称弱信号接收)理论和技术的出现,统计数学中相关函数的概念也越来越多地被应用到雷达、通信、声学、光学、无线电天文学、生理学等学科或技术中去,形成了电子学的一个分支,称为相关电子学或相关技术.下面先介绍相关函数的概念,然后再谈相关技术的应用.
Since the Second World War, due to the development of radar and long-distance communication technology, people pay more attention to the research of stochastic signals such as noise and interference.With the theory of information, especially the theory of anti-jamming receiving (also called weak signal receiving) And the emergence of technologies, the concept of correlation functions in statistical mathematics is also increasingly being applied to disciplines or techniques such as radar, communications, acoustics, optics, radio astronomy, physiology, etc., forming a branch of electronics called Related electronics or related technology. The following describes the concept of the correlation function, and then talk about the application of related technologies.