Intelligent and precise operation and maintenance of unmanned space system: Mechanisms, technologies and applications

<p indent="0mm">Operation and maintenance technology is an important guarantee for the safe, reliable and autonomous operation of unmanned space systems, such as Earth-orbiting satellites, deep-space probes, hypersonic vehicles, and lunar/Martian rovers. Aiming at the existing remote centralized operation and maintenance method, which suffer from the problems of low execution efficiency and low precision, this paper proposed a distributed cloud-based cooperative operation and maintenance mechanism supporting privacy protection, providing an effective way to solve the challenges of “insufficient resource allocation, incomplete a priori knowledge, and insecure information interaction”. On this basis, we focused on the three core elements of AI technology, namely “data, model, and algorithm”. Then, we summarized and sorted out the research status and application of six key core technologies for intelligent and precise operation and maintenance of unmanned space system, such as data enhancement, state monitoring, anomaly detection, fault diagnosis, health assessment, and lifetime prediction. Finally, combined with the future mission requirements of aerospace missions and the development trend of artificial intelligence technology, the possible future development trend of intelligent and precise operation and maintenance technology for unmanned space system is analyzed and prospected.