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Improved Method for Telemetry Data Processing in LEO Satellite

Authors:
Dongseok Chae

Keywords: telemetry; downlink; playback

Abstract:
Satellite telemetry data is typically gathered using predefined telemetry data tables. Upon selecting data groups for collection, the same data from the chosen packets is repetitively gathered at predetermined intervals, irrespective of the satellite's operational status. However, in the event of specific errors during satellite operations or transitions to particular states, it becomes imperative to include specific data corresponding to the satellite's state or to modify the collection frequency of certain data sets. Given the constrained contact time and communication speed of low-Earth orbit satellites, complete data transmission may not be feasible under adverse communication conditions or when the satellite is in a safe mode. Therefore, a functionality is essential to selectively transmit only the indispensable data contingent upon the prevailing circumstances. This paper provides an overview of the telemetry data processing methodology utilized for low-Earth orbit satellites developed in Korea and outlines mechanisms for automatic adjustment of telemetry data in alignment with the satellite's operational status. Additionally, it presents various strategies for selectively transmitting essential data based on the prevailing conditions.

Pages: 17 to 20

Copyright: Copyright (c) IARIA, 2024

Publication date: May 26, 2024

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-68558-178-7

Location: Barcelona, Spain

Dates: from May 26, 2024 to May 30, 2024