Comparison of Distributed Space Metrology Data Information Transmission Technology for Space Solar Power Station

The space solar power station will be assembled in the space environment, with the basic units (referred to as cells) of the assemblage being stitched together to form a monolithic structure with a huge area. The multi-parameter metrological data and control information distributed in the cell will converge together to become a massive data and information flow. How to realize the space metrology data transmission between each cell and the control center of the power station will become a technical problem that must be resolved in the space solar power station. Starting from the current spacecraft data information wired and wireless transmission technology, comparing the traditional wired transmission, electromagnetic wave wireless transmission, and other data communication technologies, this paper analyses the advantages and disadvantages of various technologies, clarifies the necessity of the research and development of space solar power station new information transmission technology, and puts forward a distributed data transmission technology based on guided wave principle in the combined spacecraft structure, which uses cell structure as the transmission medium carrier. While taking into account the advantages of wireless information transmission, such as working without wiring and avoiding single-point failure, this technology also has the advantages of good compatibility, strong resistance to electromagnetic interference, high reliability, and so on, compared with the electromagnetic wave transmission technology, which can effectively meet the needs of in orbit modular assembly, operation, and maintenance of space solar power station, and provide strong support for accurate data transmission for the space metrology technology.