星载大口径环形天线的系统设计OA北大核心

The perimeter truss antenna is the ideal structure of the spaceborne deployable antenna with very large aperture,which is the key payload for high-orbit communication and high-orbit remote sensing satellite applications.The spaceborne perimeter truss antenna is a typical prestressed structure composed of the surrounding truss and cable network system.The accuracy of surface and the fundamental frequency of antenna are the main performance indexes of antennas.On-orbit reliable deployment is the premise of on-orbit application,and reliable deployment is the most important part of antenna design.The influence of ring antenna system parameters on on-orbit performance is analyzed.Based on the analysis of the deployable power system and the transmission power system,the influence of system parameters of the ring antenna on the deployable reliability is expounded.The method of evaluating the on-orbit performance design by structural statics and the deployable reliability by dynamic means are proposed.The design flow of spaceborne large aperture perimeter truss antenna system is defined by strength verification and on-board lock-release design by structural dynamics method,and the optimization strategy of each design parameter is proposed.It provides a reference for technical research and engineering development of the larger aperture spaceborne deployable antenna in the future.