The study of guidance performance of a phased array seeker with platform

This paper proposed a new structure of phased array seeker called phased array seeker with platform(PASP), which consist of a stable platform and a phased array seeker mounted on it. Then the mathematical model of PASP is established to analyze the influence of projectile body disturbance on the seeker performance. The feed forward compensation method is used to complete line of sight rate decoupling. Based on the difference of the extraction point of guidance information, two methods of decoupling are presented and their corresponding transfer function models are established. Furthermore, the parasitic loop in the guidance loop induced by disturbance rejection effect (DRE) of PASP is established, and the properties are analyzed to use for PASP tracking and guidance loops. The study indicates that PASP performs better than other types of seekers in terms of rapidly tracking targets and improving guidance precision.