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  2. Sentinel-1 - Wikipedia

    en.wikipedia.org/wiki/Sentinel-1

    The four operational modes offered by Sentinel-1 are: [11] [16] [17] Strip Map (SM) Mode, which features 5-by-5-metre (16 by 16 ft) spatial resolution and an 80 km (50 mi) swath. The sole uses of SM are to monitor small islands as well as emergency management for extraordinary events upon request.

  3. List of Earth observation satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_Earth_observation...

    Resurs-P No.1 and 2: Active Roscosmos: 2013 SAOCOM: Active CONAE: 2018 SARAL: Active ISRO: 2013 Sentinel-1A, B and C Active ESA: 2014 Constellation of two, each satellite carries C-SAR sensor. Part of the Copernicus Programme. Sentinel-2A, B, and C Active ESA: 2015 Constellation of three, each satellite carries MSI sensor for high spatial ...

  4. Satellite imagery - Wikipedia

    en.wikipedia.org/wiki/Satellite_imagery

    Download as PDF; Printable version; ... Spatial resolution is defined as the pixel size of an image representing the size of the ... Sentinel-1 (SAR imaging ...

  5. 1951 USAF resolution test chart - Wikipedia

    en.wikipedia.org/.../1951_USAF_resolution_test_chart

    A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.

  6. Sentinel-1A - Wikipedia

    en.wikipedia.org/wiki/Sentinel-1A

    Sentinel-1A is a European radar imaging satellite launched in 2014. It is the first Sentinel-1 satellite launched as part of the European Union's Copernicus programme. The satellite carries a C-band Synthetic Aperture Radar which will provide images in all light and weather conditions. It analyzes many phenomena occurring on Earth, from ...

  7. Synthetic-aperture radar - Wikipedia

    en.wikipedia.org/wiki/Synthetic-aperture_radar

    Synthetic-aperture radar (SAR) is a form of radar that is used to create two-dimensional images or three-dimensional reconstructions of objects, such as landscapes. [1] SAR uses the motion of the radar antenna over a target region to provide finer spatial resolution than conventional stationary beam

  8. Sentinel-1B - Wikipedia

    en.wikipedia.org/wiki/Sentinel-1B

    Sentinel-1B was a European radar imaging satellite launched on 25 April 2016. It is the second of two original satellites in the Sentinel-1 constellation, part of the European Union's Copernicus programme on Earth observation. The satellite carries a C-SAR sensor, capable of providing high-resolution imagery regardless of weather conditions.

  9. Interferometric synthetic-aperture radar - Wikipedia

    en.wikipedia.org/wiki/Interferometric_synthetic...

    Interferometric synthetic aperture radar, abbreviated InSAR (or deprecated IfSAR), is a radar technique used in geodesy and remote sensing.This geodetic method uses two or more synthetic aperture radar (SAR) images to generate maps of surface deformation or digital elevation, using differences in the phase of the waves returning to the satellite [1] [2] [3] or aircraft.