" The aim of this guide is to help non-experts in providing a starting point in the decision process for selecting an appropriate Earth Observation (EO) solution. EO is defined as the process of acquiring observations of the Earth’s surface and atmosphere via remote sensing instruments. The acquired data is usually in the form of digital imagery. Earth’s surface can be observed from different platforms, each presenting its own advantages and limitations. Aerial platforms, for instance, generally provide the best resolutions and are very adjustable to the users’ needs, but the high cost of chartering a plane and paying the related manpower (pilots and technicians) restricts its use. Drones, also called Remotely Piloted Aircraft Systems (RPAS), are a fast-growing technology that tackles this cost problem, but regulations and their low carrying capacity currently limits their range of activity. On the other hand, satellites allow for reliable, true global coverage even above the most remote locations enabling regular repeat observations.
This document focuses primarily on operational applications of Earth Observation data. Many other science applications are also possible."
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" Earth Observation data can be acquired through different channels. Free of cost data is generally provided by public agencies, under potential conditions linked to the application envisaged and the nationality of the entity requiring access.
Information on access to Earth Observation data products from ESA can be found at https://earth.esa.int/web/guest/data-access, where products can be browsed by mission and instrument, or by Earth topic, typology and processing level.
Data can also be bought from private companies operating commercial satellites, or by their numerous certified resellers. An indicative list of provider websites can be found in Figure 18.
This non-exhaustive list has been created for information only. It gathers an arbitrary selection of representative EO images providers. This does not constitute in any way a recommendation for any of the companies listed.
Public EO data providers
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ESA
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ESA-Sentinel
Sentinel Hub
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Eumetsat
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USGS (Landsat)
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NOAA
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NASA
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Japan
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China
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India
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Commercial EO data providers
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Digital Globe resellers
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Airbus
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Deimos
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Planet Labs
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ImageSat International NV
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Urthecast
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MDA Geospatial Services
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E-geos
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Satellite Imaging Corporation
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CGG
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European Space Imaging
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Land info
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Terra server
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Apollo Mapping
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