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GPS satellite constellation animation Various Earth orbits to scale; green dash-dot line is medium Earth orbit, a typical GPS orbit. Animation of GPS satellites' orbits from 15 May 2013 to 6 September 2018 USA-242 · USA-239 · USA-151 · Earth Note: This animation does not reflect actual orbits which are approximately 350 times denser than these. GPS satellite blocks are the various ...
COSPAS - SARSAT is the international humanitarian Search and Rescue Satellite-Aided Tracking System that is responsible for alerting and locating information to search and rescue authorities. COSPAS-SARSAT satellites detect 406 MHz distress signals at all times from nearly any place on the globe.
The U.S. Tracking and Data Relay Satellite System (TDRSS, pronounced "T-driss") is a network of American communications satellites (each called a tracking and data relay satellite, TDRS) and ground stations used by NASA for space communications.
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 B satellites, respectively. [4] The mission ...
Satellite image of North Korea in December 2002. Captured by NASA with the Aqua satellite. Satellite imagery in North Korea is a knowledge-building tool in the field of North Korean studies. It enables researchers to produce data-based analyses in the agricultural, humanitarian, economic and military fields, in a country where access to the field is limited.
Photo interpretation at the U.S. National Photographic Interpretation Center during the Cuban Missile Crisis. Aerial photographic and satellite image interpretation, or just image interpretation when in context, is the act of examining photographic images, particularly airborne and spaceborne, to identify objects and judging their significance. [1] This is commonly used in military aerial ...
The recovery of the Discoverer 14 return capsule (typical for the CORONA series) A KH-4B CORONA satellite Discoverer 14 launch 1960, Thor Agena "A" launch vehicle The CORONA[1] program was a series of American strategic reconnaissance satellites produced and operated by the Central Intelligence Agency (CIA) Directorate of Science and Technology with substantial assistance from the U.S. Air ...
Landsat 8 is an American Earth observation satellite launched on 11 February 2013. It is the eighth satellite in the Landsat program and the seventh to reach orbit successfully. Originally called the Landsat Data Continuity Mission (LDCM), it is a collaboration between NASA and the United States Geological Survey (USGS). NASA Goddard Space Flight Center in Greenbelt, Maryland, provided ...