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Leading Research Seamless and Autonomous Space Communication System for Society 5.0

For Society5.0, which, is the economic society following on from the hunter-gatherer society, agricultural society, industrial society, and information society, the transmission of information and highly flexible communications are required in broadband environments and in case of large-scale disasters over a wide range of fields of activity, including the sky and sea. The importance of space communication networks that seamlessly connect to terrestrial networks and high-speed communication links for geostationary/non-geostationary commercial communication/earth observation/data relay satellites are increasing.

In this research, for the purpose of achieving a seamless and autonomous space communication system, we conduct over a wide range of device-level to system-level studies.

The Value of Our Research

  • We aim to contribute to the construction of the society5.0 platform promoted by the Japanese government, and achieve an internationally competitive, high-speed communication satellite system required for the 2020s. (We aim to technologically verify the Engineering Test Satellite-9 project currently under development, and, following on the next-generation geostationary communications satellite which is an internationally competitive satellite system, to research the technology required for future generations of geostationary indications satellites.)
  • In addition to the requirements on the ground, we aim to construct a high-speed communication satellite system that can contribute to missions in fields such as earth observation, space science/planetary exploration, and space environment use.

Research Goals

In terms of the keywords in satellite communication system international competitiveness, we have broadly categorized our research into the following three sub-themes.

Optical communications technology research

  • Research into high-speed, lightweight optical communications devices
  • Research into high-power optical amplifiers
  • Research in optical ground stations (optical communications, debris observation) and operation of optical ground stations

RF satellite communications technology research

  • Research into high-speed transmission systems
  • Research related to communications payload

Low-cost, lightweight, high-performance bus device research

  • Research on active thermal control technology (two-phase mechanically pumped loop)
  • Research into solar batteries for space use
  • Research into more compact and lightweight power control devices
  • Research into lightweight/low-cost batteries