ETS-VIII, S-band satellite mobile communications

WINDS, Gigabit class satellite communications

This project develops mobile satellite communication system using handheld earth terminals for daily or emergency communications from anywhere in service beams provided by satellite.

WINDS leads IP based high data rate satellite communications carried by on-boarding Advanced Baseband Switch (ABS). Also 1.2Gbps linkage is available in non-regenerate operation.

Smart Satellite Technology

Optical Space Communications (or former pages)

Frequent experiments are needed to advance satellite communication technologies for use in space. We study the technologies not only for basic technologies for advanced satellite telecommunication systems but also to demonstrate such technologies in a timely manner using small satellites.

In order to achieve high data-rate space communications, free-space laser communications and 10 Gbps ground tracking adaptive optics system are studied. We are aiming to make it use for deep space and manned space applications.

Satellite Orbits

Millimeter-wave satellite communications

Satellite tracking and orbit dynamics are studied in connection with space telecommunications.

In order to realize 10 Gbps millimeter-wave satellite communications system, R&D of optically controlled millimeter-wave array antenna has been carried out.

Satellite-Terrestrial Integrated mobile Communication Systems

This project promotes research and development frequency sharing infrastructure technology of terrestrial mobile communication and satellite mobile communication.