The Landsat program is the longest running enterprise for acquisition of satellite imagery of Earth. On July 23, 1972 the Earth Resources Technology Satellite was launched. This was eventually renamed to Landsat. The most recent, Landsat 7, was launched on April 15, 1999. The instruments on the Landsat satellites have acquired millions of images. The images, archived in the United States and at Landsat receiving stations around the world, are a unique resource for global change research and applications in agriculture, cartography, geology, forestry, regional planning, surveillance, education and national security. Landsat 7 data has eight spectral bands with spatial resolutions ranging from 15 to 60 meters; the temporal resolution is 16 days.
Read more about Landsat Program: History, Satellite Chronology, Technical Details, Future
Famous quotes containing the word program:
“Navajo men and boys have an odd way of showing their friendship. When two young men meet at the trading post, a “Sing”, or a dance they greet each other, inquire about the health of their respective families, then stand silently some ten or fifteen minutes while one feels the other’s arms, shoulders, and chest.”
—Administration in the State of Ariz, U.S. public relief program (1935-1943)