Glossary

Term	Meaning
ACK / NACK	Acknowledgement code / Negative Acknowledgement code
ADCS	Attitude Determination and Control System
Beacon	Periodical data transfer from the satellite with basic status information
CM	Communication Module
CubeSat	Satellite manufactured according to CubeSat design specifications
Downlink	Data transfer from the satellite
EPS	Electrical Power System
F.R.W.	Ferrofluid Reaction Wheel
Nanosatellite	Satellite with wet mass between 1 and 10 kg
IGRF-12	International Geomagnetic Reference Field
IMU	Inertial Measurement Unit
ISS	International Space Station
OBC	On-Board Computer
PCB	Printed Circuit Board
RF	Radio Frequency
UHF	Ultra High Frequency
Uplink	Data transfer to the satellite.