Prospects on JAXA/NICT Participation

Two optical comunication study groups in JAXA

Aerospace Research and Development Directorate

Institute of Space and Astronautical Science

JAXA Space Exploration Center

Satellite Applications Mission Directorate I

Space Tracking & Data Acquisition Department

Space-to-Space scenario(e.g.,LEO-GEO) Tomohiro ARAKI

Space-to-Earth scenario(e.g., Deep space-Earth) Tatsuya MUKAI

Internal secretariat Shinichi INAGAWA

Scenario of research Point of contact

JAXA ORGANIZATION CHART

NICT (Space Communication Systems Laboratory)

Collaboration

Prospects on JAXA/NICT Participation

Space-to-Space scenario (e.g.,LEO-GEO)

Space-to-Space scenario study group hopes to contribute.Our prospect is from 2016 and on.

Wavelength: to be yet decidedModulation/Demodulation:

compatible to BPSK homodyne and DD-DPSKPlanned Schedule: research of key components 2012–2014 Development or System BBM in 2015- (TBD)

Prospects on JAXA/NICT Participation

Space-to-Earth scenario(e.g., Deep space-Earth)

Space-to-Earth scenario study group a strong interest in Deep space or space science mission and hopes to contribute.Our prospect is from 2015 or 2016 according to their research status.

Wavelength: 1.5μm band (TBD)Modulation/Demodulation, and so on: Under study

This group has one of concern that the selection of technologies in Asia region like Japan would not be exactly same as those in other regions, because of diffrent weather conditions and some different operation required.

National Institute of Information and Communications Technology

Possible NICT contributions to CCSDS activities

Followings can be possible in our activities including SOTA and VSOTA missions.

• Laser beam propagation data at 1.5 μm

• Atmospheric turbulence model

• Coding for free-space laser communications

• Real-time atmospheric monitoring and forecast

• Handover, DTN

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Prospects on JAXA/NICT Participation

The comment for Charter draft

Regarding the traded-off between the projects originally proposed in OLSG (2 Green Books and 2 Blue Books) and alternative projects (2 Green Books and 3 Blue Books), we consider that it is better to proceed with the original projects in the phase of book development because it is easy to discuss for every scenario.

In the phase of application of Blue or Green Books, it is better to keep the form proposed in the alternative projects because it is convenient when selecting technologies in each Book depending on each layers.

Assuming future re-editing of the original projects into the form proposed in alternative projects, we consider proceeding with the original projects is favorable.