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机载系统和设备合格审定中的软件考虑
1
EUROCAE ED-12B/RTCA DO-178B
机载系统和设备合格审定中的
软件考虑
二○○九年十二月
机载系统和设备合格审定中的软件考虑
2
目 录
EUROCAE ED-12B/RTCA DO-178B .......................................................................................................1
1.0 简介 ......................................................................................................................................................69
1.1 目的 .................................................................................................................................................69
1.2 范围 .................................................................................................................................................69
1.3 与其他文件的关系 .........................................................................................................................69
1.4 怎样使用本文件 .............................................................................................................................69
1.5 文件概述 .......................................................................................................................................610
第二章 与软件开发有关的系统考虑 .....................................................................................................611
2.1 系统生存周期过程和软件生存周期过程之间的信息流 ...........................................................612
2.1.1
从系统过程到软件过程的信息流
........................................................................................612
2.1.2
从软件过程到系统过程的信息流
........................................................................................613
2.2 失效状态和软件等级 ...................................................................................................................613
2.2.1
失效状态分类
........................................................................................................................613
2.2.2
软件等级定义
........................................................................................................................614
2.2.3
软件等级确定
........................................................................................................................614
2.3 系统体系结构的考虑 ...................................................................................................................615
2.3.1
分区
........................................................................................................................................615
2.3.2
多版本非相似软件
................................................................................................................616
2.3.3
安全监控
................................................................................................................................616
2.4 对用户可修改软件、可选项软件和商用成品软件的系统考虑 ...............................................616
2.5 对外场可加载软件的系统设计考虑 ...........................................................................................617
2.6 对软件验证的系统需求考虑........................................................................................................618
2.7 系统验证中的软件考虑 ...............................................................................................................618
3.0 软件生存周期 ....................................................................................................................................618
3.1 软件生存周期过程 .......................................................................................................................618
3.2 软件生存周期定义 .......................................................................................................................619
3.3 过程之间的迁移准则 ...................................................................................................................619
4.0 软件计划过程 ....................................................................................................................................620
4.1 软件计划过程目标 .......................................................................................................................620
4.2 软件计划过程活动 .......................................................................................................................621
4.3 软件计划 .......................................................................................................................................621
4.4 计划软件生存周期环境 ...............................................................................................................622
4.4.1
软件开发环境
........................................................................................................................622
4.4.2
语言和编译程序考虑
............................................................................................................623
4.4.3
软件测试环境
........................................................................................................................623
4.5 软件开发标准 ...............................................................................................................................623
4.6 软件计划过程的评审和质量保证 ...............................................................................................624
5.0 软件开发过程 ....................................................................................................................................624
5.1 软件需求过程 ...............................................................................................................................624
5.1.1
软件需求过程目标
................................................................................................................625
5.1.2
软件需求过程活动
................................................................................................................625
5.2 软件设计过程 ...............................................................................................................................625
5.2.1
软件设计过程目标:
............................................................................................................625
5.2.2
软件设计过程活动
................................................................................................................626
5.2.3
用户可修改软件的设计
........................................................................................................626
5.3 软件编码过程 ...............................................................................................................................626
5.3.1
软件编码过程目标
................................................................................................................627
机载系统和设备合格审定中的软件考虑
3
5.3.2
软件编码过程活动
................................................................................................................627
5.4 集成过程 .......................................................................................................................................627
5.4.1
集成过程目标
........................................................................................................................627
5.4.2
集成过程活动
........................................................................................................................627
5.4.3
集成考虑
................................................................................................................................628
5.5 可追踪性 .......................................................................................................................................628
6.0 软件验证过程 ....................................................................................................................................628
6.1 软件验证过程目标 .......................................................................................................................629
6.2 软件验证过程活动 .......................................................................................................................629
6.3 软件评审和分析 ...........................................................................................................................630
6.3.1
高层需求的评审和分析
........................................................................................................630
6.3.2
低层需求的评审和分析
........................................................................................................630
6.3.3
软件体系结构的评审和分析
................................................................................................631
6.3.4
源代码的评审和分析
............................................................................................................631
6.3.5
集成过程输出的评审和分析
................................................................................................632
6.3.6
测试用例、测试规程和测试结果的评审和分析
................................................................632
6.4 软件测试 .......................................................................................................................................632
6.4.1
测试环境
................................................................................................................................633
6.4.2
基于需求的测试用例的选取
................................................................................................633
6.4.2.1 正常范围测试用例 ......................................................................................................................634
6.4.2.2 健壮性测试用例 ..........................................................................................................................634
6.4.3
基于需求的测试方法
............................................................................................................634
6.4.4
测试覆盖率分析
....................................................................................................................635
6.4.4.1 基于需求的测试覆盖分析 .......................................................................................................636
6.4.4.2 结构覆盖率分析 .......................................................................................................................636
6.4.4.3 解析结构覆盖率分析结果 .......................................................................................................636
7. 0 软件配置管理过程 ...........................................................................................................................636
7.1 软件配置管理过程目标 ...............................................................................................................637
7.2 软件配置管理过程活动 ...............................................................................................................637
7.2.1
配置标识
................................................................................................................................637
7.2.2
基线和可追踪性
....................................................................................................................638
7.2.3
问题报告、追踪及纠正措施
................................................................................................638
7.2.4
变更控制
................................................................................................................................638
7.2.5
变更评审
................................................................................................................................639
7.2.6
配置状态审核统计
................................................................................................................639
7.2.7
归档、检索和发布
................................................................................................................639
7.2.8
软件加载控制
........................................................................................................................640
7.2.9
软件生存周期环境控制
........................................................................................................640
7.3 数据控制类别 ...............................................................................................................................640
8.0 软件质量保证过程 ............................................................................................................................641
8.1 软件质量保证过程目标 ...............................................................................................................641
8.2 软件质量保证过程活动 ...............................................................................................................642
8.3 软件一致性评审 ...........................................................................................................................642
9.0 合格审定联络过程 ............................................................................................................................643
9.1 符合性方法和计划 .......................................................................................................................643
9.2 符合性证明 ...................................................................................................................................643
9.3 必须提交给合格审定机构的软件生存周期数据 .......................................................................644
机载系统和设备合格审定中的软件考虑
4
9.4 与型号设计有关的软件生存周期数据 .......................................................................................644
10.0 航空器或发动机合格审定概述 ......................................................................................................644
10.1 合格审定基础 .............................................................................................................................644
10.2 合格审定的软件方面考虑 .........................................................................................................644
10.3 符合性确定 .................................................................................................................................645
11.0 软件生存周期数据 ..........................................................................................................................645
11.1 软件合格审定计划 .....................................................................................................................646
11.2 软件开发计划 .............................................................................................................................646
11.3 软件验证计划 .............................................................................................................................647
11.4 软件配置管理计划 .....................................................................................................................647
11.5 软件质量保证计划 .....................................................................................................................648
11.6 软件需求标准 .............................................................................................................................649
11.7 软件设计标准 .............................................................................................................................649
11.8 软件编码标准 .............................................................................................................................649
11.9 软件需求数据 .............................................................................................................................650
11.10 设计描述 ...................................................................................................................................650
11.11 源代码 .......................................................................................................................................651
11.12 可执行目标码 ...........................................................................................................................651
11.13 软件验证用例和规程 ...............................................................................................................651
11.14 软件验证结果 ...........................................................................................................................651
11.15 软件生存周期环境配置索引 ...................................................................................................651
11.16 软件配置索引 ...........................................................................................................................652
11.17 问题报告 ...................................................................................................................................652
11.18 软件配置管理记录 ...................................................................................................................652
11.19 软件质量保证记录 ...................................................................................................................652
11.20 软件完成总结 ...........................................................................................................................652
12.0 额外的考虑 ......................................................................................................................................653
12.1 先前开发软件的使用 .................................................................................................................653
12.1.1
先前开发软件的修改
........................................................................................................654
12.1.2
航空器安装的变更
..............................................................................................................654
12.1.3
应用或开发环境的变更
......................................................................................................654
12.1.4
开发基线升级
......................................................................................................................655
12.1.5
软件配置管理考虑
..............................................................................................................655
12.1.6
软件质量保证考虑
..............................................................................................................656
12.2 工具鉴定 ......................................................................................................................................656
12.2.1
软件开发工具鉴定准则
......................................................................................................657
12.2.2
软件验证工具鉴定准则
......................................................................................................657
12.2.3
工具鉴定数据
......................................................................................................................657
12.2.3.1 工具鉴定计划 ............................................................................................................................658
12.2.3.2 工具操作要求 ............................................................................................................................658
12.2.4 工具鉴定许可 ...............................................................................................................................658
12.3 替代方法 .....................................................................................................................................658
12.3.1
形式化方法
..........................................................................................................................659
12.3.2
穷举输入测试
......................................................................................................................660
12.3.3
多版本非相似软件验证的考虑
..........................................................................................660
12.3.3.1 多版本非相似软件的独立性 ....................................................................................................661
12.3.3.2 处理器相关的多重验证 .............................................................................................................661
机载系统和设备合格审定中的软件考虑
5
12.3.3.3 多版本源代码验证 ....................................................................................................................661
12.3.3.4 多版本非相似软件的工具鉴定 ................................................................................................661
12.3.3.5 多仿真器及其验证 ....................................................................................................................661
12.3.4
软件可靠性模型
..................................................................................................................662
12.3.5
产品服役历史
......................................................................................................................662
附件 A 按软件等级组织的过程目标和输出 .......................................................................................664
附件 B 缩略语及术语汇编...................................................................................................................674
缩略语...................................................................................................................................................674
术语汇编...............................................................................................................................................675
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