Abstract: Beijing 3 satellite, successfully launched in June 2021, is a novel agile optical remote sensing satellite with the characteristics of intelligence, high agility and dynamic imaging. As one of the innovative technologies in Beijing 3, autonomous mission planning greatly makes Beijing 3 more intelligent and user friendly compared to all previous satellites. In this paper, the operating mode and payload working modes of Beijing 3 are firstly introduced. Then, the detailed design of autonomous mission planning is proposed, including the core functions and key technical requirements, the systematic design of hardware based on homemade DSP chip, the information flow design of autonomous mission planning from ground injecting original mission data blocks to onboard generating and outputting the subsystem commands, and the realization of all functional modules of autonomous mission planning software. Finally, the inorbit test results and application of the implemented autonomous mission planning in Beijing 3 during the past year are summarized. Its rapid, accurate and coordinated planning with steady performance demonstrates the rationality and effectiveness of the proposed design.

Key words: Autonomous Mission Planning Design and Onboard Application of Beijing 3 Satellite