Application of MDO algorithm to multi-tier trajectory optimization design for a surface-to-air missile kinetic kill

A multi-tier trajectory optimization framework for a surface-to-air missile to optimize the kill probability was proposed based on the multi-tier optimization process (MTOP). The missile's intercepting process was divided into three tiers, which were the midcourse trajectory optimization, the terminal homing phase and the kinetic tungsten rods lethal enhance kinetic kill process. A tier can be seen as a subsystem, the multi-tier trajectory optimization problem is essential a multidisciplinary design optimization (MDO) problem. A solution of the multi-tier trajectory optimization framework was presented based on the MDO theory and methods through discipline analysis and system analysis. The global sensitivity equation (GSE) method and All-in-One method were used to solve the system optimization problem. The results show that both methods are effective for solving the MTOP problem, and the All-in-One is much better.