Satellite edge computing for real-time and very-high resolution Earth observation

Israel Leyva-Mayorga, Marc Martinez-Gost, Marco Moretti, Ana Perez-Neira, Miguel Angel Vazquez, Petar Popovski, Beatriz Soret

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

2 Citationer (Scopus)
12 Downloads (Pure)

Abstract

In high-resolution Earth observation imagery, Low Earth Orbit (LEO) satellites capture and transmit images to ground to create an updated map of an area of interest. Such maps provide valuable information for meteorology and environmental monitoring, but can also be employed for real-Time disaster detection and management. However, the amount of data generated by these applications can easily exceed the communication capabilities of LEO satellites, leading to congestion and packet dropping. To avoid these problems, the Inter-Satellite Links (ISLs) can be used to distribute the data among multiple satellites and speed up processing. In this paper, we formulate a satellite mobile edge computing (SMEC) framework for real-Time and very-high resolution Earth observation and optimize the image distribution and compression parameters to minimize energy consumption. Our results show that our approach increases the amount of images that the system can support by a factor of 12× and 2× when compared to directly downloading the data and to local SMEC, respectively. Furthermore, energy consumption was reduced by 11% in a real-life scenario of imaging a volcanic island, while a sensitivity analysis of the image acquisition process demonstrates that energy consumption can be reduced by up to 90%.

OriginalsprogEngelsk
TidsskriftIEEE Transactions on Communications
Vol/bind71
Udgave nummer10
Sider (fra-til)6180-6194
Antal sider15
ISSN0090-6778
DOI
StatusUdgivet - 1 okt. 2023

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