Search results
Results from the WOW.Com Content Network
Sentinel-2 is an Earth observation mission from the Copernicus Programme that acquires optical imagery at high spatial resolution (10 m to 60 m) over land and coastal waters. The mission's Sentinel-2A and Sentinel-2B satellites were joined in orbit in 2024 by a third, Sentinel-2C, and in the future by Sentinel-2D, eventually replacing the A and ...
Automated processing of 2.3 million scenes from the ASTER archive was used to create the ASTER GDEM, which included stereo-correlation to create individual scene-based ASTER DEMs, masking to remove cloudy pixels, stacking all cloud-screened DEMs, removing residual bad values and outliers, averaging selected data to create final pixel values.
Sentinel-2A is a European optical imaging satellite launched in 2015. It is the first Sentinel-2 satellite launched as part of the European Space Agency 's Copernicus Programme . The satellite carries a wide swath high-resolution multispectral imager with 13 spectral bands.
This image contains data from a satellite in the Copernicus Programme, such as Sentinel-1, Sentinel-2 or Sentinel-3. Attribution is required when using this image. Attribution is required when using this image.
Sentinel-2B is a European optical imaging satellite that was launched on 7 March 2017. It is the second Sentinel-2 satellite launched as part of the European Space Agency 's Copernicus Programme , and with its orbit phased 180° against its sister satellite, Sentinel-2A .
A digital elevation model (DEM) or digital surface model (DSM) is a 3D computer graphics representation of elevation data to represent terrain or overlaying objects, commonly of a planet, moon, or asteroid.
The USGS DEM format is a self-contained (single file) set of ASCII-encoded (text) 1024-byte (1024 ASCII chars) blocks that fall into three record categories called A, B, and C. There is no cross-platform ambiguity since line ending control codes are not used, and all data including numbers is represented in readable text form.
But in 2015, the ALOS PALSAR data became unrestricted, [28] and the Sentinel-1 data is also unrestricted. [19] In June 2013, the Alaska Satellite Facility released newly processed, 35-year-old data [29] from the 1978 Seasat satellite mission. [30] Before this release, only 20 percent of the Seasat SAR data had been processed digitally. [31]