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Space Radio Engineering Lab / (Research Institute for Sustainable Humanosphere) Space Electromagnetic Environment Exploration Lab
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The lab investigates the electromagnetic environment of space using small observation instruments and satellite data.

AboutAbout the lab
Unraveling the electromagnetic environment of space.
The Space Radio Engineering Lab (Research Institute for Sustainable Humanosphere, Kojima Lab) studies the electromagnetic environment of outer space and the space systems needed to use it as part of the humanosphere in which people live.
The lab approaches this from both engineering and science perspectives.
Its research fields range from space systems engineering, orbital dynamics, and space plasma physics to electronics and radio engineering.
The lab is deeply involved in space missions in Japan and abroad, and carries out research with JAXA, NASA, ESA, and many collaborators.
Key terms
- Plasma
- A state in which gas atoms and molecules separate into electrons and ions, with electrically charged particles flying about. It fills outer space.
- Analog ASIC
- An integrated circuit built for a specific purpose that handles analog signals.
- Fine bubble
- A very small bubble with a diameter of a few micrometers or less.
ResearchResearch themes
Using three approaches, namely developing observation instruments, analyzing satellite observation data, and running large-scale numerical simulations, the lab studies the electromagnetic environment and plasma phenomena in space.
*Illustrative imageUltra-small space instruments on a chip
The lab is researching how to fit the analog section of a plasma wave instrument carried on satellites onto a chip a few millimeters square using an analog ASIC. It is also studying the "Space Electromagnetic Environment Monitor," which measures the electromagnetic environment of space by scattering small sensors.
*Illustrative imageInterpreting satellite observation data
The lab analyzes data such as electric and magnetic fields measured by satellites, and examines electromagnetic waves propagating through space plasma and solar activity, to deepen understanding of the electromagnetic environment of space.
*Illustrative imageParticle simulation of space
The lab studies space phenomena that are difficult to measure through numerical simulations that recreate environments imitating satellites and the lunar surface. It uses the supercomputer of the Research Institute for Sustainable Humanosphere.
*Illustrative imageMeasuring very small bubbles
The lab evaluates the properties of fine bubbles and ultrafine bubbles, with diameters of a few micrometers or less, using electrical methods, and works to clarify their behavior and advance measurement methods.
MembersFaculty
The faculty of the Space Radio Engineering Lab are Professor Hirotugu Kojima, Associate Professor Satoshi Kurita, and Assistant Professor Yoshikatsu Ueda.
- ProfessorHirotugu Kojima
- Associate ProfessorSatoshi Kurita
- Assistant ProfessorYoshikatsu Ueda
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Arase ISAS” 宇宙科学研究所(ISAS) / CC BY 4.0 (cropped)
- Ultra-small space instruments on a chip: “07R01” Mister rf / CC BY-SA 4.0 (cropped)
- Interpreting satellite observation data: “Radiation Belt Storm Probes” NASA / Public domain (cropped)
- Particle simulation of space: “Lunar Mini-Magnetosphere” epp.golp / CC BY-SA 4.0 (cropped)
- Measuring very small bubbles: “Bubblemon - a lemon immersed in water with air bubbles ( )” Luca Florio / CC BY-SA 3.0 (cropped)
- Related lab (Radio Science Simulation Lab): “Lofoten, Norway (Unsplash)” Johannes Groll followhansi / CC0 (cropped)
- Related lab (Microwave Energy Transmission Lab): “Solar power satellite sandwich or abascus concept” NASA / Public domain (cropped)
- Related lab (Applied Digital Engineering Lab): “GSK980TA control system” TurnOnTheNight / CC BY-SA 4.0 (cropped)
- Related lab (Electrical Information Systems Lab): “Chubu Electric Power Grid Chushin Substation” photo: Qurren (talk) Taken with Canon PowerShot G9 X / CC BY-SA 4.0 (cropped)
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