软件可靠性的量化问题讨论

在航天器中,随着软件数量的增多,软件可靠性问题日趋尖锐。软件可靠性不能只停留在定性分析阶段,要建立明确的可靠性指标,要通过全任务剖面建立起来的测试用例,对给定软件作长时间的测试和可靠性评价,以便展现软件可靠性不断增长的过程。本文介绍软件可靠性量化的方法,供软件研制者参考。

Discussion on Quantification of Software Reliability

The reliability of software becomes more important along with the increasing software amount in spacecraft equipments.In fact,the qualitative analysis is not enough;the software reliability should also be analyzed quantitatively.For specific software,long time testing and reliability evaluation should be done by using the test cases which are established through whole task profile,so as to display the increasing process of the software reliability.This paper introduces the methods and related softwares for the quantification of software reliability.