Abstract: The creditability of missile trajectory simulation model is not taken into a count based on the distributed environment of hardware-in-loop. From the view of engineering and practice, a strategy of self-adaptation of the simulation step size is designed and implemented in the real-time trajectory simulation. At the same time, two methods of missile trajectory simulation are presented according to the features of the distributed environment of hardware-in-loop: the simulation based on the environment of attacker and the simulation based on the environment of target aircraft. After analyzing the simulation results obtained from the two methods, the missile trajectory simulation based on the environment of target aircraft outperforms the one based on the environment of attacker. Undoubtedly, it has improved the creditability of real-time trajectory simulation in the hardware-in-loop environment to a great extent.

Key words: simulation science and technology, real-time missile trajectory simulation, hardware-in-loop, self-adaptation of the simulation step size