引言自从第二次世界大战末期以来,导弹制导技术一直在以愈来愈高的速度发展着。在过去的二十年里,制导技术还一直受着固态电子学方面新发现和新进展的重大影响。一些文章(从本期起将陆续译载这些文章——编者)的主要议题是战术导弹导引头,不同的导引头,它们被设计成利用电磁能量频谱的某一部分频段。读者大都熟悉微波领域的技术发展水平,在毫米波、红外和光学等波段 Introduction Since the last days of World War II, missile guidance technology has been growing at an ever-increasing rate. Guidance technology has also been heavily influenced by new discoveries and developments in solid-state electronics for the past two decades. The main topics for some articles, which will be successively translated from this issue onwards, are the Tactical Missile Seeker, the different Seekers, which are designed to make use of a portion of the spectrum of the electromagnetic energy spectrum. Most readers are familiar with the microwave technology development in the field of millimeter wave, infrared and optical bands