In view of the positioning needs of rockets,missiles and other aircraft in the field of aerospace and national defense industry that fall off or separate under flight conditions,a high-performance missile positioning system is designed.As the primary functional core of the system,the positioning module obtains its own position information through real-time communication with the satellite through the RNSS module,and can realize short message communication to the ground Beidou receiving terminal through the RDSS module.GD32F450VIT6 microcomputer extracts and frames the information data generated in this process.To a certain extent,the system solves the positioning problem of weapons and equipment,launch vehicles and other large instruments and equipment working in high temperature,high impact,ultra-high speed and other harsh environments,after static and dynamic comprehensive environmental test assessment,positioning error is about 5 m,and high integration,the whole machine volume is only 200×140×104 mm³ size,with high positioning accuracy,strong communication real-time characteristics.