Satellite Edge Computing for Real-Time and Very-High Resolution Earth Observation
Por:
Leyva-Mayorga I., Martinez-Gost M., Moretti M., Perez-Neira A., Vazquez M.A., Popovski P., Soret B.
Publicada:
1 oct 2023
Categoría:
Electrical and electronic engineering
Resumen:
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 12x and 2x 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%.
Filiaciones:
Leyva-Mayorga I.:
Aalborg University, Department of Electronic Systems, Aalborg, 9220, Denmark
Martinez-Gost M.:
Universitat Politècnica de Catalunya, Centre Tecnològic de Telecomunicacions de Catalunya, The Department of Signal Theory and Communications, Barcelona, 08034, Spain
Moretti M.:
University of Pisa, Department of Information Engineering, Pisa, 56126, Italy
Perez-Neira A.:
Universitat Politècnica de Catalunya, ICREA, Centre Tecnològic de Telecomunicacions de Catalunya, Department of Signal Theory and Communications, Barcelona, 08034, Spain
Vazquez M.A.:
Centre Tecnològic de Telecomunicacions de Catalunya, Castelldefels, 08860, Spain
Popovski P.:
Aalborg University, Department of Electronic Systems, Aalborg, 9220, Denmark
Soret B.:
Aalborg University, Department of Electronic Systems, Aalborg, 9220, Denmark
Telecommunications Research Institute, University of Malaga, Malaga, 29071, Spain
Green Submitted, Green Published, All Open Access; Green Open Access
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