Research on the Construction and Application of Simulation Model of Vehicle Rocking Base Based on Sea Launch

With the continuous development of commercial aerospace, the heat of launch vehicle at sea is gradually rising, and the initial alignment technology applied to launch vehicle at sea has become the key point to be solved urgently. The initial alignment accuracy is one of the necessary conditions to ensure the vehicle to achieve accurate orbit entry. In this paper, firstly, the current status of initial alignment methods of rocking base at home and abroad is sorted out, and then, by establishing a six-degree-of-freedom model in sea state, a construction method of rocking model is studied to solve the problem of high-precision initial alignment of marine launch vehicles, and the model is evaluated and the corresponding error analysis is made through the self-alignment algorithm based on QUEST and Kalman filter.