AMSAT-UK

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Small Satellite SDR Paper

Posted: 10 Jan 2017 08:36 AM PST
https://amsat-uk.org/2017/01/10/smal...ite-sdr-paper/


Mamatha R. Maheshwarappa 2E0CZO has released her paper Improvements in CPU
& FPGA Performance for Small Satellite SDR Applications.

Abstract: The ongoing evolution in constellation/formation of CubeSats
along with steadily increasing number of satellites deployed in Lower Earth
Orbit (LEO), demands a generic reconfigurable multimode communication
platforms. As the number of satellites increase, the existing protocols
combined with the trend to build one control station per CubeSat become a
bottle neck for existing communication methods to support data volumes from
these spacecraft at any given time.

This paper explores the Software Defined Radio (SDR) architecture for the
purposes of supporting multiple-signals from multiple-satellites, deploying
mobile and/or distributed ground station nodes to increase the access time
of the spacecraft and enabling a future SDR for Distributed Satellite
Systems (DSS).

Performance results of differing software transceiver blocks and the
decoding success rates are analysed for varied symbol rates over different
cores to inform on bottlenecks for Field Programmable Gate Array (FPGA)
acceleration. Further, an embedded system architecture is proposed based on
these results favouring the ground station which supports the transition
from single satellite communication to multi-satellite communications.

You can download the PDF of the paper from http://epubs.surrey.ac.uk/812783/

Mamatha worked on the STUDSAT-1, STUDSAT-2 and STRaND-1 satellites which
carried amateur radio payloads and was Satellite Officer & Member of the
Surrey Electronics and Amateur Radio Society

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