Space-Time Standards Laboratory

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NICT >Applied Electromagnetic Research Institute >Space-Time Standards Laboratory

Four Groups of Space-Time Standards Laboratory have conducted research and development.

Japan Standard Time Group

Japan Standard Time Group is responsible for generating and keeping JST based on UTC(NICT), comparing UTC(NICT) using international time-transfer link, disseminating the standard time and frequency called JJY, and providing useful information and data on time related business applications and solutions.

Atomic Frequency Standards Group

We are conducting research to develop atomic clocks with ultra-high accuracy, aiming for the establishment of accurate standard of time and frequency.

Space-Time Measurement Group

Space-time Measurement Group conducts research and development on space and time measurement technologies using radio and optical waves.

Satellite Time Management Group

We are developing the time management system for the quasi zenith satellite system (QZSS), and also carrying out precise time and frequency comparison experiments between a clock on a satellite and the clocks on the ground using ETS-VIII (engineering test satellite 8).

　Research bases

Koganei Headquarters
4-2-1 Nukui-Kitamachi, Koganei,
Tokyo 184-8795 Japan
Tel:+81 42 327 7429
Map

Kashima Space Research Center
893-1 Hirai, Kashima,
Ibaraki 314-8501 Japan
Tel:+81 299 82 1211
Map

　Time and Frequency Transmission Facilities

Ootakadoyayama LF Station
Near the summit of Ohgakadoya-yama on the border between Miyakoji, Tamura City and Kawauchi Village in Futaba County of Fukushima Prefecture

Haganeyama LF Station
Near the summit of Hagane-yama on the border between Juji, Saga City of Saga Prefecture and Itoshima City in Fukuoka Prefecture

Facilities

34m Antenna (Kashima Space Research Center)

11m Antenna (Kachima Space Research Center)

ETS-VIII (36000km over the equator)