Design And Implementation Of Micro-nano Satellite Interconnection Measurement And Control System

With the continuous development of micro-nano satellite technology,the number of micronano satellites in orbit has increased dramatically,and space missions have become increasingly complex.Micro-nano satellites have placed higher requirements on measurement and control systems,and the traditional "one-station,one-satellite" measurement and control model is no longer available to meet the needs of measurement and control.After in-depth investigation and analysis of domestic and foreign aerospace measurement and control network design schemes,and comprehensive consideration of the working characteristics of micro-nano satellite measurement and control system,this paper proposes a micro-nano satellite interconnection measurement and control system design scheme,which meets the requirements of micro-nano satellite joint measurement and control tasks.It can integrate measurement and control resources and improve measurement and control efficiency.The main research contents of this article are as follows:1.Based on the analysis of the micro-nano satellite orbit model theory,this paper designs a micro-nano satellite orbit prediction and tracking algorithm.Through comparison and analysis with the results of the STK / HPOP model,the algorithm’s high prediction accuracy and high real-time performance are verified.The algorithm is applicable to quickly switch between measurement and control tasks.2.This paper studies the non-blocking IO model and RPC technology,designs the connection maintenance algorithm and message queue model between the measurement and control station and the server,and proposes a network method for the measurement and control station.Based on this,a database system for interconnected measurement and control servers is designed to achieve efficient management of measurement and control stations and measurement and control tasks.3.According to the communication characteristics between the modules of the interconnected measurement and control system,this paper designs a data transmission communication protocol between the measurement and control station and the server.Based on this,a relay transmission algorithm for micro-nano satellite large data files is designed to realize the relay transmission of satellite-ground long messages and ensure the reliability of satelliteground data transmission.Based on the JSON data format,this paper designs a dynamic analysis protocol for measurement and control data to achieve high configurability of satellite measurement and control mission access,and improves the flexibility and compatibility of the measurement and control system.4.According to the system design scheme,the paper builds a micro-nano satellite interconnected measurement and control system platform and tests the system.The feasibility and reliability of the micro-nano satellite interconnection measurement and control system were verified by testing the functions and performance of the antenna module,signal conversion module and server module.