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Iris Deep-Space Transponder for SLS EM-1 CubeSat Missions

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dc.contributor.author Kobayashi, M. Michael
dc.date.accessioned 2020-03-23T15:41:21Z
dc.date.available 2020-03-23T15:41:21Z
dc.date.issued 2017-08-07
dc.identifier.citation 2017 Small Satellite Conference, Logan, Utah, August 5-10, 2017 en_US
dc.identifier.clearanceno CL#17-2719
dc.identifier.uri http://hdl.handle.net/2014/47728
dc.description.abstract Several key design upgrades have been recently made to the Iris Deep-Space Transponder baselined to be used on secondary payload missions of the upcoming Space Launch System Exploration Mission One (SLS EM-1). The Iris Transponder is a reconfigurable software-defined radio (SDR) designed for missions requiring interoperability with NASA's Deep Space Network (DSN) on X-band frequencies (7.2 GHz uplink, 8.4 GHz downlink). The transponder provides radiometric tracking support with the DSN to provide navigational products for precise orbit determination while performing standard uplink and downlink communications in a CubeSat/SmallSat-applicable package size. The recent hardware changes include a volume reduction of 30% from previous models, with the main transponder unit weighing less than 1.0 kg, while maintaining total ionizing dose (TID) radiation tolerance of >23 krads (Si) for deep-space missions. Lab tests indicate maximum downlink rates of up to 6.25 Msps can be supported by the transponder in conventional BPSK modulation, but most SLS EM-1 CubeSat missions are link-performance limited to less than 256 kbps. A prototype unit of the flight production units has been assembled and various performance and characterization tests are underway. This talk discusses the key design aspects and specifications of the Iris Transponder and presents preliminary results from early testing of the assembled transponder. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2017 en_US
dc.title Iris Deep-Space Transponder for SLS EM-1 CubeSat Missions en_US
dc.type Preprint en_US


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