Abstract:Aimed at the design characteristics and typical defects of 1553B bus RT software, and in combination with the high reliability requirements of military software, a systematic study was carried out on the integrated application method of dynamic and static testing technologies. Through multi-dimensional dynamic tests such as functional test, interface test, performance test, security test, strength test and recoverability test, combined with static code review and interrupt mechanism analysis, a test framework covering the entire software life cycle was constructed. The research proposed test strategies for key issues such as message processing mechanism, interrupt and fault tolerance recovery, and designed special review sheets to enhance the ability to prevent defects. Verified by actual engineering applications, the method significantly improved the sufficiency and efficiency of testing, effectively shortened the testing cycle, and solved the problems of insufficient coverage and difficult positioning in traditional testing. The research results provided systematic technical support for the reliability assurance of 1553B bus RT software, and also offered guidance and reference for the software testing practice of aerospace embedded systems.