Effects of Saturation for High-Throughput Satellite Buses

Bus saturation is deemed as one of the primary causes of delays in the data propagation between spacecraft components. However, the conditions under which bus congestion can affect measurements variability were not well characterized before. This paper presents a bus saturation model and a set of ex...

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Bibliographic Details
Published inIEEE transactions on aerospace and electronic systems Vol. 56; no. 2; pp. 1014 - 1025
Main Authors Carvajal-Godinez, Johan, Guo, Jian, Gill, Eberhard K. A.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.04.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Algorithms
and recovery (FDIR)
Attitude and orbit control subsystem (AOCS)
bus Saturation
Communication channels
Computer architecture
controller area network (CAN) protocol
Delays
Estimation
fault detection
isolation
measurement delay
measurement variance
Satellite broadcasting
Satellite buses
Satellites
Saturation
Space vehicles
Spacecraft components
Synchronism
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Summary:Bus saturation is deemed as one of the primary causes of delays in the data propagation between spacecraft components. However, the conditions under which bus congestion can affect measurements variability were not well characterized before. This paper presents a bus saturation model and a set of experiments to characterize the bus performance of satellite missions for different traffic load, data rate, and synchronization periods. The results showed an increase of measurements variance of up to 18% caused by bus saturation. Additionally, an algorithm was proposed to reduce the data delay by controlling the saturation on the communication channel at the operational level.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2019.2940341