机载软件标准GJB 5000B与DO-178C对比分析研究

Comparative Analysis and Research on the Airborne Software Standard of GJB 5000B and DO-178C

随着现代军用武器装备的研发升级,机载软件在项目贯彻中按照GJB 5000B的要求管理的同时也逐渐引入了适航思维。使得军用机载软件不仅要满足GJB 5000B的要求还需满足DO-178C的要求。对2个标准进行了分析对比,GJB 5000B与DO-178C一样,都是软件保证标准,且覆盖整个软件生命周期,因而均可直接指导软件研制,以及软件产品的评估与重审。2个标准均采用基于分级模式的递增式划分。但是DO-178C以适航性要求为出发点,强调软件的安全性,以目标递增为特点,对软件等级进行划分。而GJB 5000B是将组织的软件能力划分为5个成熟度等级,每一级都是基于前一级的改进,等级间的递增显示出软件组织能力逐步发展、完善的过程。介绍2个标准的特点与异同处,为机载软件全生命周期活动提供了设计及管理思路。

With the development and upgrading of modern military weapons and equipment,the airworthiness thinking has been gradually introduced while the airborne software is managed according to the requirements of GJB 5000B in the implementation of the project.So that the military airborne software must not only meet the requirements of GJB 5000B but also meet the requirement of DO-178C.The two standards are analyzed and compared.GJB 5000B,like DO-178C,is a software assurance standard and covers the entire software life cycle,so both can directly guide software development and software product evaluation and review.Both standards adopt an incremental partition basd on a hierarchical model.However,DC-178C takes the requirement of seaworthiness as the starting point,emphasizes the safety of software,and divides the level with the feature of increasing target.GJB 5000B divides the software capability of an organization into five maturity levels,each level is based on the improvement of the previous level,and the increase between levels shows the process of gradual development of software organizational capabilities.The characteristics,similarities and differences of the two standards are introduced,which provides the design and management ideas for the entire lifecycle activities of airborne software.