Research and Implementation of Key Technologies for Integrated Data Processing and Transmission of Queqiao-2 Relay Satellite

Abstract

As To meet the requirements of the Queqiao-2 relay communication payload for multiple deep-space exploration missions and relay communication services，a design method for comprehensive data processing and transmission with high performance，high integration, and high reliability was proposed. he research and development of key technologies such as front-end multi-source data scheduling and management，on-board reconfiguration and minimal system design，and wear leveling of large-capacity solid-state storage have been mainly completed. Through ground testing and on-orbit verification，this system has realized relay communication services between multiple lunar mission spacecraft and ground stations，as well as deep space exploration storage-computing-control integrated technology exceeding 8 Gb/s. It supports software on-orbit reconfiguration，and for the first time achieves a downlink data rate to Earth covering the range of 1–500 Mb/s. Moreover，it effectively supported the successful implementation of the world's first sampling return mission from the far side of the Moon—China's Chang'e-6 mission. This work can provide a reference for data processing and transmission design in future deep space exploration missions.

Keywords

Queqiao-2 relay satellite / integrated data processing / integration / reconfigurable / minimum system