In recent years,because of the development of new underwater weaponwith long navigation time and distance,navigation reliability assessment method which based on success or failure often in tests is debated.One side,utilizing short navigation test data to assess reliability doesn’t consider the navigation time resulting in the low trustiness,on the other hand,performing adequate long navigation reliability tests is not only restricted on expenditure,development period and high risk,but also affected by the divorce from the other functionality and performance test,which brings about the low test efficiency and the insufficiency of data using.Therefor,based on the mission performing mode and combined with the exponential reliability distribution of underwater weapons,a method for actual navigation reliability test and assessment is proposed,which gives consideration to feasibility and practicability requirments and is adaptable to reliability engineering practice of underwater weapons.

In order to satisfy the needs of testing performance of launch and control system, a portable universal testing device with small volume, light weight, low cost and high reliability is developed. Describes the design of the overall plan, system hardware and system software of the portable universal testing device in details. The tests show that the portable universal testing device realizes the comprehensive performance index of multi type launch and control system, greatly improves the test efficiency, and reduces the cost of human resources.

To improve system reliability, a synthetic control equipment with dual CPU hot-redundancy technology is proposed, in which the real time state monitor and switching on master and slave are realized by arbitration. In consideration the complexity, reliability and implementation difficulty, a redundancy management method for task-level synchronization is proposed, which realizes the synchronization of task between the master and slave through the communication link and the task synchronization software running on the CPU module. This method not only meets the device synchronization requirement, but also easy to implement with low complexity.