Research on Frequency Selection Method for Spatial Terahertz Communication under Multiple Constraints

Abstract

The terahertz frequency band has the advantages of large bandwidth, narrow beam, strong penetration, and high security, and is an important direction for the frequency expansion of the next generation of satellite communications. In this paper, according to the satellite-ground and inter-satellite terahertz communication frequency bands divided by the International Telecommunication Union, the atmospheric transmission loss model of the satellite-ground terahertz communication link is constructed and simulated, and the key components of terahertz communication in different frequency bands are analyzed based on the research status at home and abroad. At the same time, the transmission performance comparison of satellite-ground and inter-satellite terahertz communication links in different frequency bands was carried out. Finally, through a comprehensive analysis of the transmission loss, device availability and link transmission performance of different terahertz communication frequency bands, the recommendations for the selection of frequencies for satellite-ground and inter-satellite terahertz communication.