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Communication with satellites like cubesats has many problems due to the weak and unreliable link. A cubesat typically transmit with less than 1W and have quite small antennas.

We propose a protocol development project which can take a take off on AAUSAT3 CSP Protocol.

  • Analysis of strength and weakness of CSP
  • Analysis of characteristics for communication (link budget, error rate)
  • Analysis of communication needs for application (client-server, broadcast, groupcast, (un)reliable, adaptive correction
  • Design and implementation of a solution

It is important to take into consideration:

  • Message size (do you really want to move 4 MByte)
  • Multi layer protocol definition acc to ISO skeleton
  • What is to be left to handled at next protocol level (fragmentation, re transmit)
  • Error modelling - whatif loss of packages, retransmit,...

Additional features is usage of more ground stations with intelligent re assembly of packages.

See for additional information about our embedded own devloped transciever and first trial on a distributed ground system.

for further information contact Jens or Jesper (jdn, jal

Page last modified on January 31, 2013, at 03:26 PM EST