Design On Spread Spectrum Reference Source System Based On Miniature Horn Antenna And Its Implementation

Interference sources synchronous communication satellite positioning is one of the important responsibilities of state radio monitoring center.With the development of national economy,satellite communication becomes more and more important,and the number of satellite communication users also increases,which poses new challenges to satellite jamming positioning.New development trend puts forward new requirements for positioning work: higher success rate;faster positioning speed;higher positioning accuracy.In order to obtain good positioning accuracy,sufficient reference sources are needed to calibrate the positioning parameters.This calibration process can improve the positioning accuracy from a few hundred kilometers to a few kilometers level.Therefore,the design and implementation of a high-precision spread spectrum reference system is the key.By studying the existing satellite interference source positioning system,this paper studies the design and implementation of the spread spectrum reference source system based on the miniature small horn antenna,according to the basic principle of aperture antenna design,extended frequency reference positioning technology,multi-signal number division multiplexing principle,synchronous/asynchronous spread spectrum reference working principle.Firstly,the overall requirements of the system are analyzed,and the overall framework of the system is given.Then,the working principle of the small horn antenna is elaborated in detail,and the antenna is designed and simulated.By analyzing the simulation results,the design parameters of the antenna are finally determined.Finally,the antenna is manufactured according to the design parameters.The measured results show that the antenna meets the design requirements.In addition,according to the system design requirements,this paper carries out the selection of main functional modules and equipment,including reference signal source module,GPS antenna and C/Ku band up-conversion power amplifier.Combining with hardware,the software architecture of the system is realized,and the whole system is built.At the same time,the functional requirements of the whole system are completed.In this paper,the parameters of the spread spectrum reference system based on small horn antenna are tested.The actual test results show that the system designed in this paper can meet the design requirements,and significantly improve the positioning timeliness.