Amateur Radio CubeSat to use 5.8 GHz and optical comms

Amateur Radio CubeSat to use 5.8 GHz and optical comms

The Amateur Radio CubeSat FITSAT-1 plans to transmit 115.2 kbps digital data in the Amateur Satellite Service 5.8 GHz band and will also carry an Optical Communications experiment.

FITSAT-1 (aka NIWAKA) is a 1U CubeSat (10*10*10cm) that should be be deployed from the International Space Station by robot arm in late 2012. It will generate about 2W RF output using a 16W DC input.

The main mission will be to demonstrate high speed data transfer from a satellite, it can transmit a VGA-size (640×480 pixel) JPEG photograph in only 5 to 6 seconds.

The second mission is to determine if a satellite can be made to appear as an “artificial star” using high-output LEDs in flash mode. The light from this flash will be received by the ground station, which has a telescope with photo-multiplier linked to a 5.8GHz parabola antenna. This is a basic experiment to investigate the possibility of optical communication with satellites.

A UHF AX25 1k2baud transceiver will also be carried for telemetry and telecommand purposes and a UHF CW beacon will also be provided. It will be deployed along with the satellites RAIKO and WEWISH into a 350x350km 51.6deg inclination orbit.

The following downlink frequencies have been coordinated by the IARU Satellite Frequency Coordination Panel: CW 437.250 MHz, FM 437.445 MHz, High speed data 5840.00 MHz.

 

FITSAT-1 information, pictures and deployment movie
http://www.fit.ac.jp/~tanaka/fitsat.shtml

Kibo Robot Arm
http://kibo.jaxa.jp/en/about/kibo/rms/

IARU Satellite Frequency Coordination Panel pages hosted by AMSAT-UK
http://www.amsat.org.uk/iaru/

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