SCaN Testbed Design
At the core of the SCaN Testbed are three unique software defined
radios (SDRs) provided by government and industry partners. All of
the radios are compliant with the NASA Space Telecommunications Radio
System (STRS) Architecture Standard. The SCaN Testbed also includes
an Avionics Subsystem, RF switching, and a variety of antennas, two
of which are on a gimbal. The General Dynamics (GD) SDR is S-Band
only, while the Jet Propulsion Laboratory (JPL) SDR has both S-Band
and L-Band (GPS) capability. The Harris Corporation (HC) SDR is Ka-Band.
The operating systems and waveforms within these radios are reconfigurable
and will be changed (modified or replaced) during on-orbit operations.
The Avionics Subsystem provides general control and data handling,
as well as supporting network routing. Just like the radios, the software
loaded in the Avionics Subsystem will be changed for experiments.
The radios are mounted to the Flight Enclosure and functionally interface
with the Avionics and Radio Frequency (RF) subsystems.