Software Defined Radio

SDR-mission

Software Defined Radio

The goal of the mission is to develop a space-based SDR system that shall provide Arctic researchers easier and faster access to scientific data products.

Why is it necessary?

Communication infrastructure in the Arctic is limited.

  • The harsh climate has a direct impact on system implementation and its constraints.
    • The equipment must be designed for power efficiency since in the winter there is no sun to charge the batteries with solar power.
    • Structures must deal with the icing of mechanical parts which makes mechanical design challenging.
  • Satellite communication channels are variable, so communications systems are usually designed for the worst case.

How to complement current alternatives?

The traditional ways of retrieving scientific data in the Arctic are:

  • To go on expeditions to physically collect sampled data from the sensors. Expeditions are costly due to the harsh conditions of the area and there are extreme cold and dangerous local fauna.
  • To use existing satellite services. In these remote areas, existing satellite services are also quite expensive and dependent on service providers.

A possible alternative is to use a flexible communication system for heterogeneous networks using small satellites, UAVs and AUVs.

Next steps

Communication measurements are needed to study and characterise the signal degradation at UHF frequency bands in the Arctic. Better knowledge of this field can contribute to a better design of the communication system.