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Two recurrent satellites, Sentinel-3C and Sentinel-3D, will follow in approximately 2025 and 2028 respectively to ensure continuity of the Sentinel-3 mission. [7] Each Sentinel-3 satellite is designed to operate for seven years in a sun-synchronous low-Earth orbit. The satellites use multiple sensors to measure topography, temperature, marine ...
The Sentinel A4 is a complete redesign of the sensor that uses digital processing and solid-state antenna modules based on gallium nitride (GAN) transmitters. The scalable modular architecture is shared with the long-range AN/TPY-4 radar, which has 1000 individually controlled elements and uses GPU computing for signal processing.
Originally nicknamed "Sentinel". Eight P-3B aircraft were converted into Airborne Early Warning and Control aircraft. In the early 90s, "Control" was dropped from the official designation along with the corresponding "C", renaming the model "P-3-AEW". This made it more easily differentiated from the E-3-AWACS operated by the U.S.Air Force.
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-3A is a European Space Agency Earth observation satellite dedicated to oceanography which launched on 16 February 2016. [5] It was built as a part of the Copernicus Programme , and is the first of four planned Sentinel-3 satellites.
Sentinel-3B is a European Space Agency Earth observation satellite dedicated to oceanography which launched on 25 April 2018. [1] It was built as a part of the Copernicus Programme , and is the second (after Sentinel-3A , launched 16 February 2016) of four planned Sentinel-3 satellites.
A rectilinear scanner is an imaging device, used to capture emission from radiopharmaceuticals in nuclear medicine. The image is created by physically moving a radiation detector over the surface of a radioactive patient. It has become obsolete in medical imaging, largely replaced by the gamma camera since the late 1960s. [1] [2] [3]
[2] [3] There are three general types of spectral imagers. There are push broom scanners and the related whisk broom scanners (spatial scanning), which read images over time, band sequential scanners (spectral scanning), which acquire images of an area at different wavelengths, and snapshot hyperspectral imagers , which uses a staring array to ...