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	Landsat Program
		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, geology, forestry, regional planning, education and national security.
		The value of the Landsat Program was recognized by Congress in October, 1992 when it passed the Land Remote Sensing Policy Act (Public Law 102-555) authorizing the procurement of Landsat 7 and assuring the continued availabilty of Landsat digital data and images, at the lowest possible cost, to traditional and new users of the data.
		The focus is on the development of Landsat 7 and Landsat-type remote sensing of the earth in the 21st century.
	geo.arc.nasa.gov /sge/landsat/landsat.html (504 words)

	EO Library: Landsat 7 Fact Sheet
		Scientists use Landsat satellites to gather remotely sensed images of the land surface and surrounding coastal regions for global change research, regional environmental change studies and other civil and commercial purposes.
		Landsat 7 will fulfill its mission by providing repetitive, synoptic coverage of continental surfaces; spectral bands in the visible, near-infrared, short-wave, and thermal infrared regions of the electromagnetic spectrum; spatial resolution of 30 meters (98-feet); and absolute radiometric calibration.
		The Landsat 7 system will offer the unique capability to seasonally monitor important small-scale processes on a global scale, such as the inter- and intra-annual cycles of vegetation growth; deforestation; agricultural land use; erosion and other forms of land degradation; snow accumulation and melt and the associated fresh-water reservoir replenishment; and urbanization.
	earthobservatory.nasa.gov /Library/Landsat (374 words)

	Landsat: A Global Land-Observing Program, Fact Sheet 023-03 (March 2003)
		Landsat's mission is to establish and execute a data acquisition strategy that ensures the repetitive acquisition of observations over the Earth's land mass, coastal boundaries, and coral reefs and to ensure that the data acquired are of maximum utility in supporting the scientific objective of monitoring changes in the Earth's land surface.
		Landsats 1, 2, and 3 operated in a near-polar orbit at an altitude of 920 km.
		The primary sensor aboard Landsats 1, 2, and 3 was the multispectral scanner (MSS).
	erg.usgs.gov /isb/pubs/factsheets/fs02303.html (1741 words)

	Landsat
		Landsat 6 was launched in 1993 but did not achieve orbit and was lost.
		Landsats 4 and 5 carried the MSS sensor and an advanced MSS called a Thematic Mapper which records in seven spectral bands and obtains high resolution images (30m/pixel) of selected areas.
		Landsat circles the Earth in a nearly polar orbit (circling the Earth from pole to pole).
	www.nasm.si.edu /research/ceps/rpif/landsat/Landsat.html (820 words)

	SVS Science Story - LANDSAT PAINTS A PORTRAIT OF OUR CHANGING PLANET
		The low cost of Landsat 7 data, as well as the elimination of data copyright, has fostered an environment in which users are free to experiment with novel applications, and use large quantities of data for existing applications.
		Landsat satellites monitor important natural processes and human land use such as vegetation growth, deforestation, agriculture, coastal and river erosion, snow accumulation and fresh-water reservoir replenishment, and urbanization.
		Landsat 7 marks a new direction in the program to reduce the costs of data and increase global coverage for use in global change research.
	svs.gsfc.nasa.gov /stories/Landsat_20020722/index.html (2324 words)

	LANDSAT PROJECT AND LANDSAT 7 APPLICATIONS
		The main of this project (landsat) is to make sure that there is a record of up to date imagery taken of the earth that includes the earth’s coastline boundaries, landmass and biodiversity such as coral reefs.
		Landsat 7 images can be used to monitor the environment, the use of land and mapping, geological and hydrological analysis etc. According to NASA’s landsat website, “The landsat satellite consists of seven bands”.
		The landsat image tracks the growth that is taking place in large urban areas and its effect on the land.
	www.public.asu.edu /~aahinds/landsat/Landsat7.htm (1299 words)

	Landsat 1 (ERTS 1) - Launched July 23, 1972
		Landsat 1 had a near-polar sun synchronous orbit and was also equipped with a three-camera return beam vidicon (RBV) system that could obtain visible and near IR photographic images of the earth.
		Landsat 1 was terminated on January 6, 1978, when the degradation of the orbit caused it to see almost constant sunlight which led to overheating.
		Landsat 1 was a test of the feasibility of an earth resources satellite system, and the determination of the spectral wavelengths was primarily based on forestry and geologic applications that had traditionally used Color IR photography.
	www.geog.ucsb.edu /~jeff/115a/history/landsat1.html (302 words)

	Eurimage
		Landsat 7 data ceased to be acquired by ESA stations from that date.
		Landsat 7 SLC-Off world-wide imagery continues to be acquired by USGS through the on-board tape recorder.
		Landsat 5 data has been regulalrly acquired at the ESA Matera station since 1 January 2004 (regular acquisitions at ESA stations had ceased on 30 June 2001).
	www.eurimage.com /products/landsat.html (2121 words)

	ES 351/771/775 Landsat introduction
		It was put into Landsats 4 and 5 in the early 1980s, and once again proved to be a technological and scientific success that greatly exceed design criteria.
		Landsat digital images, collected over a 25-year period, are among the most important data assets available to the earth-science community.
		Landsat was made part of NASA's Mission to Planet Earth program in 1994, and President Clinton established Landsat 7 as a joint program with NASA, NOAA (later dropped out), and the U.S. Geological Survey's EROS Data Center (EDC).
	academic.emporia.edu /aberjame/remote/landsat/landsat.htm (2868 words)

	Landsat program - Wikipedia, the free encyclopedia
		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, education and national security.
		Landsat 6 was finally launched on October 5, 1993, but was lost in a launch failure.
		The value of the Landsat program was recognized by Congress in October, 1992 when it passed the Land Remote Sensing Policy Act (Public Law 102-555) authorizing the procurement of Landsat 7 and assuring the continued availabilty of Landsat digital data and images, at the lowest possible cost, to traditional and new users of the data.
	en.wikipedia.org /wiki/Landsat (821 words)

	Landsat 7 Media Kit (Site not responding. Last check: 2007-10-21)
		Landsat 7 is the latest in a series of Earth-imaging spacecraft to continue the 26-year flow of global change information to the scientific community and commercial users worldwide.
		Data from Landsat is used for monitoring global deforestation, monitoring fire damage, estimating soil moisture and snow water equivalence, monitoring flood, storm, earthquake and volcanic eruption damage.
		Landsat 7 consists of a spacecraft bus, being provided under a NASA contract with Lockheed Martin Missiles and Space in Valley Forge, Penn. The spacecraft's Enhanced Thematic Mapper Plus instrument was procured under a NASA contract with Hughes Santa Barbara Remote Sensing in Santa Barbara, Calif.
	www.boeing.com /defense-space/space/delta/delta2/Landsat (361 words)

	The United States — Landsat
		Landsat 5 carries instruments that send back multispectral imagery of the Earth in which objects or features 30 m across can be distinguished.
		Following the return of data from Landsat 1, it became immediately apparent that such data could be extremely valuable to a wide variety of users, and all Landsat data were made available to the general public.
		Landsat 2 was removed from service on 25 February 1982, and Landsat 3 was removed from service 31 March 1983.
	www.tec.army.mil /tio/LANDSAT.htm (1435 words)

	Remote Sensing for Coastal Management - Sensor Summaries - Landsat TM/ETM+
		Landsats are polar-orbiting satellites which will record data for any given spot on Earth every 16 days at approximately the same time of day, which has typically been midmorning.
		Landsat 7 ETM+ (Enhanced Thematic Mapper) data are produced by the National Aeronautics and Space Administration (NASA) and the U.S. Geological Survey (USGS).
		Landsat 5 TM (Thematic Mapper) data are also collected by EDC, which maintains an extensive archive of TM images from Landsats 4 and 5.
	www.csc.noaa.gov /crs/rs_apps/sensors/landsat.htm (1461 words)

	The Landsat Program
		Landsats 4 and 5 carry both the MSS and the thematic mapper (TM) sensors; however, routine collection of MSS data was terminated in late 1992.
		The MSS sensors aboard Landsats 4 and 5 are identical to the ones that were carried on Landsats 1 and 2.
		Landsats 4 and 5 MSS scenes have an instantaneous field of view (IFOV) of 68 meters in the cross-track direction by 82 meters in the along-track direction (223.0 by 272.3 feet, respectively).
	webphysics.iupui.edu /gpnew/gp2sup2a.htm (2577 words)

	NASA - Top Story - THE 'WORKHORSE' SATELLITE CELEBRATES 20 YEARS - March 01, 2004
		Landsat 5, launched on March 1, 1984, continues to provide important observations of the landmass of the planet and has established a record for reliability in the civilian space fleet.
		When Landsat 5 was launched from Vandenberg Air Base in California, expectations were for two years of effective operations, with a goal of three years of data collections.
		Landsat 5 is useful for monitoring urban growth and environmental monitoring.
	www.nasa.gov /centers/goddard/news/topstory/2004/0301landsat5.html (480 words)

	ORB VISTAS -- Landsat
		Landsats 4 and 5 were placed in an orbit 705 kilometers (approximately 440 miles) high and repeated their cycle every 16 days.
		In 1993, Landsat 6 failed to attain its necessary orbit and was lost.
		The Thematic Mapper is an imaging sensor used on the Landsat 4 and 5 satellites.
	www.nasm.si.edu /exhibitions/lae/script/ov_land_landsat.htm (651 words)

	ES 351/771/775 Landsat image interpretation
		Landsat MSS band 7, acquired 5/78; image from EROS Data Center.
		Interpretation of Landsat imagery requires an appreciation of all aspects of the scene in order to recognize and analyze the features of interest.
		Landsat image draped over DEM block diagram; perspective view of the landscape with color coding from Landsat image.
	academic.emporia.edu /aberjame/remote/landsat/landsat_interp.htm (1049 words)

	Landsat - World Wind Wiki
		Landsat 7 is a satellite of the USGS Landsat Project (http://landsat.usgs.gov/).
		Landsat 7 data is available globally at a scale where you can pick out many prominent features in the landmass.
		The 1990 data was acquired with Landsat 5, and the 2000 data with Landsat 7's ETM+.
	www.worldwindcentral.com /wiki/LandSat_7#2000 (434 words)

	SPACE.com -- Landsat 5 Satellite Recovers From Latest Glitch
		Two months shy of its 22nd birthday, the Landsat 5 Earth observatory has a new lease on life after controllers dodged a potentially fatal bullet involving a crucial mechanism in charge of pivoting the craft's solar array that began to show problems in November.
		Landsat 5 had already encountered a difficulty with the solar array drive system last January when the primary mechanism failed after functioning normally for almost 21 years.
		Landsat 5 was launched into polar orbit on March 1, 1984, from California's Vandenberg Air Force Base atop a Delta rocket to begin what was then anticipated to be a three-year mission to gather images of locales across the globe.
	www.space.com /missionlaunches/sfn_060128_landsat_5.html (676 words)

	science@nasa - LANDSAT 7
		The Landsat Project is a joint initiative of the U.S. Geological Survey (USGS) and the NASA to gather Earth resource data using a series of satellites.
		Landsat's Global Survey Mission is to establish and execute a data acquisition strategy that ensures repetitive acquisition of observations over the Earth's land mass, coastal boundaries, and coral reefs; and to ensure the data acquired are of maximum utility in supporting the scientific objectives of monitoring changes in the Earth's land surface and associated environment.
		Landsat is the longest-running project for acquisition of moderate resolution imagery of the Earth from space.
	science.hq.nasa.gov /missions/satellite_48.htm (437 words)

	Obtaining Landsat Images
		Landsat 7 is expected to have a 5 year mission life.
		You won't spot your house in a Landsat image, but cities, farms, major roads, airports, rivers, and lakes are visible.
		If you are looking for low cost Landsat TM data of the Southwestern United States try Landsat4u.
	hometown.aol.com /landsatcd/MOREHTML/landsat.html (566 words)

	Hawaii Landsat 7 ETM/1G satellite imagery - Big Island cloud-free mosaic
		Cloud-free Landsat satellite imagery mosaic of the island of Hawaii.
		Landsat 7 ETM (enhanced thematic mapper) is a polar orbiting 8 band multispectral satellite-borne sensor.
		The Landsat Project is a joint initiative of the U.S Geological Survey (USGS) and the National Aeronautics and Space Administration (NASA) to gather Earth resource data using a series of satellites.
	www.hawaii.gov /dbedt/gis/data/landsat_meta.htm (1118 words)

	OnEarth, server of the Landsat 7, WMS Global Mosaic
		Pansharpening is a generic term describing the use of the higher resolution panchromatic band (15 meters per pixel) to increase the level of detail visible in the lower resolution bands.
		Since this type of procedure is mostly associated with the Landsat 7 instrument, it is not handled by the generic WMS specification.
		They are the default pseudo style, using the Landsat 7 bands 5,4 and 2 to generate the color, and the visual style, using the visual bands 3,2 and 1.
	onearth.jpl.nasa.gov (2661 words)

	First light from Landsat 7
		The first Landsat 7 image was a view of South Dakota, home of the USGS's data center for Landsat imagery.
		Officials at the Landsat 7 Project have announced that they are"highly pleased with the quality of the ETM+ data received so far." The satellite is gathering data from Earth's land surface and coastal regions.
		Because of the long history of the Landsat Program, scientists can compare the better calibrated Landsat 7 data with older Landsat images and be able to sort out effects caused by instrument differences as they analyze a scene.
	science.nasa.gov /newhome/headlines/essd28apr99_2.htm (690 words)

	ESA Earthnet: LANDSAT MSS Raw Data Product
		Landsat MSS Raw CCT data contain data at 6 bits with none of the geometric and radiometric corrections applied.
		Landsat MSS Raw is available in a digital format for Full Scene.
		Landsat full scene of imagery data correspond to an effective ground coverage area of approximately 185 km wide by 185 km in along-track direction for Landsat 1,2,3 and 185 x 170 for Landsat 4 and 5.
	earth.esa.int /services/pg/pglandsatmssraw.xml (287 words)

	Landsat 4, 5 Quicklook
		The Landsat 4 and 5 spacecraft were placed into lower orbits than the previous Landsat spacecraft and carried improved instrument suites.
		This prompted the early launch of Landsat 5 to guarantee continued coverage.
		Landsat 5 lost two of its primary communications systems (X-Band downlink and a Ku-Band TDRSS transponder) and backup systems were activated.
	leonardo.jpl.nasa.gov /msl/QuickLooks/landsat4QL.html (248 words)

	Landsat.org Home Page
		Landsat.org supports the purchasing, distribution, and sharing of Landsat 7 imagery worldwide by providing a simplified, platform-independent user interface and search engine with online data ordering.
		An instrument anomaly was discovered with Landsat 7, which appears to have started on May 31, 2003.
		All Landsat 7 scenes that were acquired from May 31, 2003 (aproximately 21:45 GMT) to present cannot be ordered at this time.
	www.landsat.org (230 words)

	The Landsat Program
		The Landsat Program is a series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey.
		Since 1972, Landsat satellites have collected information about Earth from space.
		Landsat satellites have taken specialized digital photographs of Earth’s continents and surrounding coastal regions for over three decades, enabling people to study many aspects of our planet and to evaluate the dynamic changes caused by both natural processes and human practices.
	landsat.gsfc.nasa.gov (92 words)

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