实时Unix操作系统发展

The Development of Real-Time Unix Operating System

实时操作系统是新一代航天测控系统的核心组成部分，文章围绕着建设新一代航天测控系统实时操作系统这一主题，从实时系统的可预测性概念出发，介绍了开放式系统及实时操作系统标准的制定情况，Ｕｎｉｘ操作系统的实时化技术，并介绍了两种不同结构的实时Ｕｎｉｘ系统，ＡＴ＆Ｔ公司的ＤＭＥＲＴ系统和ＮＥＣ公司的ＲＸ－ＵＸ８３２实时操作系统。文章重点介绍了当前操作系统发展的最新技术──微内核技术。描述了两个代表性产品 Ｍａｃｈ和 Ｃｈｏｒｕｓ／Ｍｉｘ ＳＶＲ４的基本结构。文章根据国内外的发展情况说明了我们对新一代航天测控系统实时操作系统发展的看法。

Real-Time operating system plays a very important part in the real time sys-tem. In this paper,the author first introduces the concept of predictability of the real time system ,and the international standards of the real time operating system, then introduces two real time Unix operating systems, deseribes microkernel technology and two famous micro-kernel operating systems. Through the analysis of the current situation of the real time Unix operating system research and application in China,the author proposes a strategy that we can take in developing our real time operating system.