Abstract: On the basis of Bias model, according to the aviation electronic system software characteristics on assessment models are cut and modified. On the ARINC653 platform fire prevention module in Testbed test platform test statistics, that the actual test case distribution obeys the mathematical characteristics of possion. Get software test case failure rate, resulting in software reliability assessment value, solves the software testing process of reliability evaluation of complex and large amount of calculation problem. Finally, on the platform of Matlab software system（fuel module）test for assessing reliability, experimental results are obtained found to be insufficient.

Key words: software testing, software reliability, ARINC653, reliability assessment

摘要： 在航空电子系统软件测试的背景上，对ARINC653平台燃油模块在Testbed测试平台上的测试用例进行统计，得出实际测试案例分布服从特殊泊松的数学特征。根据软件测试的时间依赖性提出一种新的可靠性评估模型ISTREM，并且求得软件测试用例的失效率，从而对软件进行可靠性评估，解决了软件测试可靠性评估过程复杂且计算量较大并且忽略时间依赖性的问题。在Matlab平台上对软件系统（燃油模块）的测试可靠性进行评估，得出实验结果，并且提出不足。

关键词: 软件测试, 软件可靠性, ARINC653, 可靠性评估