Abstract: As the core component of the missile system, the guidance system plays an increasingly important role in the design of missile system. In order to improve the accuracy of the guidance system, this paper obtains the experimental data under a number of parameter design schemes by means of simulation experiments. The problem of simulation credibility verification of guidance system is transformed into multi-attribute decision-making optimization problem, and a parameter optimization method of guidance system based on improved VIKOR method is designed. The improved VIKOR method overcomes the phenomenon of rank reversal and ensures that the optimal final compromise solution is the optimal solution which can feed back the decision-maker's mentality. Combined with the final simulation scheme, the optimal parameters under the background of multi-attribute decision making are obtained, which have higher decision-making significance.

Key words: VIKOR, creditability, entropy weight, system simulation, optimization