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Topic: Landsat 7

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	Landsat program - Wikipedia, the free encyclopedia
		The first Landsat satellite was launched in 1972; the most recent, Landsat 7, was launched on April 15, 1999.
		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_program (555 words)

	Encyclopedia: Landsat 7 (Site not responding. Last check: 2007-10-21)
		Landsat 7 Patch This image has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright.
		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.
	www.nationmaster.com /encyclopedia/Landsat-7 (468 words)

	First directly acquired LANDSAT 7 image
		The upgrade to Landsat 7 followed an investment by the South African Department of Agriculture, for whom the availability and the regular acquisition of Landsat imagery, is key.
		Landsat 7 imagery is particularly suited to agricultural applications such as crop yield, geo-exploration, land cover and land use assessment.
		Landsat 7 was launched from Van Den Berg Airforce base in October 1999 and is operated and managed by the United States Geological Survey (USGS).
	www.scienceinafrica.co.za /3landsat.htm (543 words)

	Landsat 7 - Wikipedia, the free encyclopedia
		The NASA World Wind project allows 3D images from Landsat 7 and other sources to be freely navigated and viewed from any angle.
		To continue the Landsat legacy, studies are underway to fly an equivalent scientific sensor on an NPOESS satellite towards the end of this decade.
		NASA selected bands 7, 4 and 2 of the Landsat satellite (false color) for the 3-band RGB mosaics because they provide a wealth of spectral (color) information about vegetation, geology and other features not visible to the human eye.
	en.wikipedia.org /wiki/Landsat_7 (617 words)

	GLCF: Landsat Technical Guide (Site not responding. Last check: 2007-10-21)
		Landsat imagery is relatively high resolution earth observation data that is acquired through sensors on one of the NASA Landsat satellites.
		ETM+ sensor on the Landsat 7 satellite was the best quality of all, until a mechanical anomaly occurred on the sensor in May, 2003.
		Landsat imagery is provided to the user from the GLCF in a specific series of formats, all of which are designed for maximum coverage of users who have access to basic graphical software.
	glcf.umiacs.umd.edu /data/guide/technical/landsat.shtml (581 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.
		Landsat 7, with its nominal design life to end in mid-2004, is currently expected to last at least through 2008.
	erg.usgs.gov /isb/pubs/factsheets/fs02303.html (1730 words)

	LANDSAT PROJECT AND LANDSAT 7 APPLICATIONS (Site not responding. Last check: 2007-10-21)
		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.
		Data acquired from landsat 7 images are used to update images of the earth’s landmass.
		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”.
	www.public.asu.edu /~aahinds/landsat/Landsat7.htm (1299 words)

	Landsat 7 Orbit & Coverage
		The orbit of Landsat 7 is repetitive, circular, Sun-synchronous, and near polar at a nominal altitude of 705 km (438 miles) at the Equator.
		Landsat 7 and Terra were launched and injected into identical 705 kilometer, sun-synchronous orbits in 1999.
		The 16-day Earth coverage cycle for Landsat 7 is known as the swathing pattern of the satellite (Figure 5.3).
	ltpwww.gsfc.nasa.gov /IAS/handbook/handbook_htmls/chapter5/chapter5.html (2131 words)

	Landsat 6, 7
		The Landsat 6 spacecraft, built by GE Astro Space, was based on RCA's Advanced Tiros-N spacecraft design used for the operational NOAA and DMSP polar orbiting meteorological spacecraft.
		The ETM sensor continued the high-resolution Landsat imagery begun with the Thematic Mapper (TM) on Landsats 4 and 5.
		Landsat 7 was a joint project between NASA, NOAA, and the US Geological Survey to obtain continuous high-resolution imagary of the earth's surface for environmental monitoring, disaster assessment, land use and regional planning, cartography, range management, oil and mineral exploration.
	www.skyrocket.de /space/doc_sdat/landsat-6.htm (424 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 Landsat 7 data will be the best available global images for quite a while, and the fact that they are free and available on the net makes them even more significant.
	www.worldwindcentral.com /wiki/LandSat_7 (450 words)

	Lab 7 Landsat - 7
		Preservation of the existing record and continuation of the Landsat capability were identified in the law as critical to land surface monitoring and global change research.
		Landsat 7 will have a unique and essential role in the realm of earth observing satellites in orbit by the end of this decade.
		In addition, the Landsat Program is committed to provide Landsat digital data to the user community in greater quantities, more quickly and at lower cost than at any previous time in the history of the program.
	www.geog.umd.edu /homepage/courses/372/Lab4_LS7Data/Lab4LS7Data.html (747 words)

	CNN - Landsat 7 begins viewing the world - May 4, 1999
		Landsat 7 was launched from Vandenberg Air Force Base in Florida on April 15.
		Landsat 7 carries three primary instruments, the Multispectral Scanner, the Thematic Mapper and the Enhanced Thematic Mapper.
		The TM was introduced on Landsat 4, and the ETM+ is new to Landsat 7.
	www.cnn.com /NATURE/9905/04/landsat.enn (457 words)

	Satellite Information - LANDSAT-7 - Supplemental Description
		Landsat 7 is the latest in a series of earth observation satellites dating back to 1972.
		The Landsat 7 spacecraft was built by Lockheed Martin, Valley Forge, Pennsylvania.
		The Landsat Program, as defined by Congress in 1992 and amended by Presidential Decision Directive/NSTC-3 in May, 1994, is managed cooperatively by the National Aeronautics and Space Administration (NASA), the National Oceanic and Atmospheric Administration (NOAA), and the USGS.
	earth.esa.int /services/pg/spglandsat7.xml (351 words)

	President Bush Proposes Increase in USGS Landsat 7 Funding for FY 2006
		Half of that increase would be used to ensure the continued operation of Landsat 7, while the other half would replenish funds from activities deferred as a result of a proposed reprogramming for 2005 Landsat 7 operations.
		The first Landsat satellite was launched in 1972 and the program took a giant leap forward technologically with the launch of Landsat 7 in 1999.
		Landsat satellites instruments have acquired more than 1.7 million moderate-resolution images of the Earth's surface, providing a unique resource for scientists who study agriculture, geology, forestry, and for regional planning, education, mapping and global change research.
	www.doi.gov /news/05_News_Releases/050204a (277 words)

	EO Newsroom: Landsat 7 First Image Received
		Landsat 7 will continue the Landsat program's 27-year legacy of gathering Earth surface images from space as part of NASA’s Earth Observing System and Earth Science Enterprise.
		Landsat 7 was designed to measure the same section every 16 days.
		According to Darrel Williams, Landsat 7 project scientist, the use of Landsat 7 images will have a tremendous impact on all types of Earth science issues and will be a great addition to the Landsat library of images.
	earthobservatory.nasa.gov /Newsroom/Stories/l7_first_image.html (398 words)

	Landsat 7 Facts
		This new system, Landsat 7, is now under construction and is scheduled for launch in July, 1998.
		The Landsat 7 spacecraft is being built by Lockheed Martin, Valley Forge, Pennsylvania.
		Landsat 6 was launched in October, 1993, but failed to obtain orbit.
	members.tripod.com /~ibank/lecture/RS30.HTM (733 words)

	science@nasa - LANDSAT 7
		Landsat 7 systematically provides well-calibrated, multispectral, moderate resolution, substantially cloud-free, sun-lit digital images of the Earth's continental and coastal areas with global coverage on a seasonal basis.
		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 (445 words)

	Landsat 7 for Lake Tahoe.
		Nominal ground sample distances or "pixel" sizes are 49 ft (15 m) in the panchromatic band; 98 ft (30 m) in the 6 visible, near and short-wave infrared bands; and 197 ft (60 m) in the thermal infrared band.
		Landsat 7 data are in UTM NAD27 zone 10 projection.
		The left half of the image was generated by combining bands 7, 4, and 1, while the right half was generated by combining bands 3, 2, and 1.
	tahoe.usgs.gov /landsat.html (290 words)

	Landsat-7
		Based on a late October 2003 meeting and several follow-up teleconferences with selected members of the former Landsat Science Team and selected US agency representatives, the USGS/NASA Landsat team is developing means to compensate for the SLC malfunction, with image processing methods and acquisition strategies to exploit the remaining capability of the Landsat 7 system.
		One system factor that most seriously suffers from the Landsat 7 SLC loss is the apparent reduction in temporal repeat frequency of coverage, as it now takes two or more acquisitions to produce one complete view.
		In summary, the rumors of Landsat 7's demise are indeed exaggerated.
	www.gewex.org /landsat-7status.htm (887 words)

	EO Library: Landsat 7 Fact Sheet
		During the summer of 1993, NASA scientists teaming with academic researchers conducted a far-ranging and historic study that concluded the rate of tropical deforestation had declined from the 1970s, but continued to be a concern along the Brazilian Amazon Basin.
		The data used by the researchers came from the Landsat satellites and covered the 10-year period from 1978-1988.
		The latest mission in the Landsat series - Landsat 7 - is part of NASA's Earth Science Enterprise (ESE) and is being built to continue the flow of global change information to users worldwide.
	earthobservatory.nasa.gov /Library/Landsat (374 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.
		The Landsat 4, 5 and 7 orbit cycle repeats every 16 days, and thus a calendar is necessary each year to determine if a pass has taken place on a specific day.
	www.eurimage.com /products/landsat.html (2105 words)

	LandSat 7 Brief (Site not responding. Last check: 2007-10-21)
		Landsat satellite images vividly emphasize the urgency of the need for addressing these situations as humankind poises for a 21st Century race to understand its home planet before time runs out.
		The Landsat Project, began in 1972 with the launch of the first satellite in the series, has provided a relatively continuous stream of images of earth.
		Landsat images of Olympia National Forest in the Olympic Peninsula in Washington state show the regrowth of forest in logged areas from 1984 to 1995.
	edmall.gsfc.nasa.gov /99invest.Site/science-briefs/land/ed-land.html (721 words)

	Landsat 7 Science Data Users Handbook
		The purpose of the Landsat program is to provide the world's scientists and application engineers with a continuing stream of remote sensing data for monitoring and managing the Earth's resources.
		Landsat 7 is the latest NASA satellite in a series that has produced an uninterrupted multispectral record of the Earth's land surface since 1972.
		Its purpose is to provide a basic understanding of the joint NASA/USGS Landsat 7 program and to serve as a comprehensive resource for the Landsat 7 spacecraft, its payload, the ground processing system, and methodologies for rendering Landsat 7 data into a form suitable for science.
	ltpwww.gsfc.nasa.gov /IAS/handbook/handbook_toc.html (203 words)

	Landsat 7
		Landsat 7, launched April 15, is the latest in a series that began with Landsat 1 in 1972.
		Landsat images have been used in everything from measuring the ebb and flow of glaciers and population changes in and around metropolitan areas, to monitoring strip mining reclamation and assessing water quality in lakes.
		Landsat 7 marks a new direction in the program to reduce the cost of data and increase global coverage for use in global change research.
	www.xs4all.nl /~carlkop/landsat.html (2569 words)

	ES 351/771/775 Landsat introduction
		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).
		Landsat 7 carries an enhanced thematic mapper plus (ETM+), which should provide continuity of Landsat TM data with enhanced spectral and spatial resolution.
	academic.emporia.edu /aberjame/remote/landsat/landsat.htm (2868 words)

	USGS Takes Complete Control Of Landsat 7 From NASA
		Landsat 7 is part of a global research program known as NASA's Earth Science Enterprise, a long-term program focused on studying changes in the Earth's global environment, and part of the USGS' Gateway to the Earth Program which aims to make accessible over the World Wide Web all the agency's earth and natural science information.
		Landsat 7 is proving to be a major resource for information about the land mass of the planet, and builds on previous satellite data, providing a crucial long-term record of the Earth's land surface.
		In addition to environmental research, Landsat data is used by customers worldwide in the government, commercial and educational communities for applications in areas such as forestry, agriculture, geology, oceanography, land mapping and geographic research.
	unisci.com /stories/20011/0116013.htm (560 words)

	Landsat 7 Shows Global Trove of Coral
		Landsat 7 measurements of live coral in the Carysfort Reef, the largest reef in the Florida Keys, matches detailed surveys taken on the ground, according to a joint study by Frank Muller-Karger, Serge Andrefouet, and Dave Palandro of the University of South Florida's College of Marine Science and Phil Dustan of the College of Charleston.
		Hatcher and doctoral student Abdulla Naseer from the Maldives Ministry of Fisheries are using Landsat 7 data to understand how wind, waves, and sea level have shaped the coral-reef nation of the Maldives, south of India.
		Landsat 7 was launched by NASA in April 1999 and began routine science observations in June 1999.
	www.gsfc.nasa.gov /gsfc/earth/cr/creef.html (595 words)

	About the Internet Landsat 7 Wizard for ER Mapper
		Once Landsat 7 scenes have been processed by this wizard and are being served by an Image Web Server, you are ready to use the images.
		Your views might include simple displays of the Landsat imagery, such as the common 542 RGB view, or they might be processed results such as the NDVI vegetation index to highlight vegetation, or the Oxide/Clay view for exploration purposes.
		The Landsat 7 images may be used from any application that has an ECW plug-in with URL support.
	www.earthetc.com /ecwls7/readme.htm (1845 words)

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