The layers above the Earth's atmosphere
Atmospheric satellites, HAPS and LAPS - Principles
Article REF: TE7628 V1
The layers above the Earth's atmosphere
Atmospheric satellites, HAPS and LAPS - Principles

Author : Daniel BATTU

Publication date: May 10, 2025 | Lire en français

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2. The layers above the Earth's atmosphere

The upper layers of the atmosphere in which HAPS will evolve have yet to reveal all their mysteries. A better understanding of these environments through international cooperation should help define the equipment and processes needed to ensure their reliability.

2.1 Temperature and ionization

There are two ways of looking at space as a function of altitude: one based on temperature variations, the other on the level of ionization of air layers under the effect of solar and space radiation.

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2.1.1 Altitude...

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