Changes for page 3.4.1. Sentinel-1 data

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1 +[[**Sentinel-1**>>url:https://sentinel.esa.int/web/sentinel/missions/sentinel-1]] (S1) is the first of the Copernicus Programme satellite constellation conducted by the European Space Agency. This space mission is composed of two satellites, Sentinel-1A and Sentinel-1B, that carry a C-band synthetic-aperture radar instrument which provides a collection of data in all-weather, day or night. The first satellite, Sentinel-1A, was launched on 3 April 2014, and Sentinel-1B was launched on 25 April 2016. Both satellites lifted off from the same location in Kourou, French Guiana, and each on a Soyuz rocket. Sentinel-1C and 1D are in development with launch dates to be determined. S1 collects data at 5 meter spatial resolution and has a revisit time of 3 days. (See also [[GERMAN Wikipedia>>url:https://de.wikipedia.org/wiki/Sentinel-1]])
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3 +Existing data can be retrieved and accessed via the [[Copernicus Open Access Hub>>url:https://scihub.copernicus.eu/dhus/#/home]] from ESA.
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5 +To see which acquisitions are planned use this [[link>>url:https://sentinel.esa.int/web/sentinel/missions/sentinel-1/observation-scenario/acquisition-segments]].
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7 +* [[Acquisition modes>>url:https://austriandatacube.eodc.eu/xwiki/bin/view/2.%20Terminology/Sentinel-1/Acquisition%20modes/]]
8 +* [[Processing Levels>>url:https://austriandatacube.eodc.eu/xwiki/bin/view/2.%20Terminology/Sentinel-1/Processing%20levels/]]