ETTC'2003 - SEE

Spacelink System – The solution for compact and high-tech ground station
Test capabilities
On-board testing (PRBS data, BER measurement …) is also available. System Midi Pyrénées
provides others equipment to improve the simulation of downlink telemetry with the CPE.
The CPE (Channel Propagation Emulator) synthesizes the principal phenomena of
propagation occurring on RF signal links between earth and space. Developed by the R&D
laboratory under CNES license, the CPE demonstrates the know-how of SMP in the field of
high-speed data processing.
The CPE applies a transfer function on a 125 MHz wideband channel. It can simulate the
following disturbances:
• Phase continuous variable delay up to 167 ms,
• Time jitter,
• Frequency Doppler shift,
• Level attenuation over 2 outputs to simulate 2 polarization channels,
• Broadband AWGN noise generator : S/N or absolute level calibrated.
Typical applications for the ECP include :
• Earth terminal testing,
• Satellite payload testing,
• Satellite system integration test bench,
• Wideband spectrum checking.
Easy to Use, Graphical display and Monitoring Capabilities
SMP built a powerful user interface with intuitive displays that allows easy manipulation,
control, setup and display of the system in real time. Upon initialization of the Spacelink
System, a windows style GUI pops up that allows complete control, setup and manipulation
of the demodulator receiver. Easy to use pop-up windows allow user to select default
parameters and add custom parameters for specific mission. A sample screen shot of the
interface shows how status on each data source is selected and controlled. Details on the
operation of the interface can be read in our guide “GUI Interface User Guide” that is
available on-line at our web site www.smpfrance.com.
Conclusion
Today various communication sectors such as deep space, satellite and mobile are
converging. This requires to develop a common platform to reduce cost and increase
flexibility. This configuration provides a very powerful communication processing system
with high flexibility.
This platform is now available and is fully-functional in stations. You can see a demonstration
at our stand SMP – Systems Midi – Pyrénées.
Systems Midi Pyrénées 4/4