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Global Change Master Directory (GCMD)
Tri-Decadal Global Landsat Orthorectified ETM+ Reg Scene V1
Entry ID: ETM_V1


Summary
Abstract: The first generation of U.S. photo intelligence satellites collected more than 860,000 images of the Earth?s surface between 1960 and 1972. The classified military satellite systems code-named CORONA, ARGON, and LANYARD acquired photographic images from space and returned the film to Earth for processing and analysis.

The images were originally used for reconnaissance and to produce maps for U.S. intelligence agencies. In 1992, an Environmental Task Force evaluated the application of early satellite data for environmental studies. Since the CORONA, ARGON, and LANYARD data were no longer critical to national security and could be of historical value for global change research, the images were declassified by Executive Order 12951 in 1995.

The first successful CORONA mission was launched from Vandenberg Air Force Base in 1960. The satellite acquired photographs with a telescopic camera system and loaded the exposed film into recovery capsules. The capsules or buckets were de-orbited and retrieved by aircraft while the capsules parachuted to earth. The exposed film was developed and the images were analyzed for a range of military applications.

The intelligence community used Keyhole (KH) designators to describe system characteristics and accomplishments. The CORONA systems were designated KH-1, KH-2, KH-3, KH-4, KH-4A, and KH-4B. The ARGON systems used the designator KH-5 and the LANYARD systems used KH-6. Mission numbers were a means for indexing the imagery and associated collateral data.

A variety of camera systems were used with the satellites. Early systems (KH-1, KH-2, KH-3, and KH-6) carried a single panoramic camera or a single frame camera (KH-5). The later systems (KH-4, KH-4A, and KH-4B) carried two panoramic cameras with a separation angle of 30 with one camera looking forward and the other looking aft.

The original film and technical mission-related documents are maintained by the National Archives and Records Administration (NARA). Duplicate film sources held in the USGS EROS Center archive are used to produce digital copies of the imagery.

Mathematical calculations based on camera operation and satellite path were used to approximate image coordinates. Since the accuracy of the coordinates varies according to the precision of information used for the derivation, users should inspect the preview image to verify that the area of interest is contained in the selected frame. Users should also note that the images have not been georeferenced.

Supplemental_Information:

In addition to the images, documents and reports (collateral information) are available, pertaining to frame ephemeris data, orbital ephemeris data, and mission performance. Document availability varies by mission; documentation was not produced for unsuccessful missions. Corner coordinate data is a critical component of the index information. Accuracy in locating corner coordinates varies according to how coordinates were derived and according to the accuracy of information used for the derivation. As a general rule, metadata corner points have errors less than 10 miles from their actual ground positions for the CORONA and LANYARD systems, and less than 50 miles for the ARGON system. After a search of the metadata, the user should inspect the browse image and its immediate neighbors in the image series for the point of interest before placing an order for photography. For example, each CORONA image is about 10 miles wide and looking at three consecutive images in a series will compensate for 10 mile errors in cornerpoint locations. The Appendix Guidance on Metadata Accuracy gives insights into the accuracy of corner coordinate data used within the imagery index, and will aid the reader in using the index to select imagery frames of interest. Also, the use of browse imagery allows the user to review a reduced resolution image to determine whether or not a specific site is contained in the selected frame.


Purpose: The CORONA Image collection was driven, in part, by the need to confirm purported developments in then-Soviet strategic missile capabilities. The images also were used to produce maps and charts for the Department of Defense and for other Federal Government mapping programs. The CORONA system provided a cost effective method to map the earth from space with stereo-optical images. CORONA demonstrated that the ability to adapt rapidly to a changing world is critical to the success of U.S. intelligence. This need to adapt grows even more acute as the pace of technological advancement increases. Data provided by CORONA offers beneficial information for environmentalists, scientists, scholars, and historians.

Related URL
Link: View Related Information
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Geographic Coverage
 N: 90.0 S: -90.0  E: 180.0  W: -180.0

Data Set Citation
Dataset Creator: USGS
Dataset Title: Tri-Decadal Global Landsat Orthorectified ETM+ Reg Scene V1
Dataset Series Name: Landsat Tri-Decadal
Dataset Release Date: 1995-02-24T00:00:00.000Z
Dataset Release Place: Sioux Falls, SD USA
Dataset Publisher: USGS
Version: V1
Data Presentation Form: Photographs
Online Resource: http://earthexplorer.usgs.gov


Temporal Coverage
Start Date: 1999-06-29
Stop Date: 2001-12-30


Location Keywords
CONTINENT > ANTARCTICA
CONTINENT > ASIA
CONTINENT > EUROPE
GEOGRAPHIC REGION > GLOBAL
GEOGRAPHIC REGION > POLAR


Science Keywords
SPECTRAL/ENGINEERING >INFRARED WAVELENGTHS >THERMAL INFRARED    [Definition]
SPECTRAL/ENGINEERING >VISIBLE WAVELENGTHS >VISIBLE IMAGERY    [Definition]


Platform
LANDSAT-7    [Information]
ARGON    [Information]
LANYARD    [Information]


Instrument
ETM+ >Enhanced Thematic Mapper Plus    [Information]


Project
LANDSAT 7    [Information]


Quality
Product anomalies may exist.


Access Constraints
none


Use Constraints
none


Keywords
LP DAAC
EOSDIS
ESIP
USGS
ARGON
CORONA
DECLASSIFIED
USGS/EROS
LANYARD
PHOTO-RECONNAISSANCE
PHOTOGRAPHY
CARTOGRAPHIC CAMERA


Data Set Progress
COMPLETE


Data Center
Earth Resources Observation and Science Center, U.S. Geological Survey, U.S. Department of the Interior    [Information]
Data Center URL: https://www.usgs.gov/centers/eros

Data Center Personnel
Name: EROS CENTER
Phone: 605-594-6151, 800-252-4547
Fax: 605-594-6589
Email: lta at usgs.gov
Contact Address:
LTA Customer Services
U.S. Geological Survey
EROS Center
47914 252nd Street
City: Sioux Falls
Province or State: SD
Postal Code: 57198-0001
Country: USA



Distribution
Distribution_Media: ftp download
Distribution_Format: Filmscans
Fees: Scanned: No Costs, $30.00 (USD) service fee per scene for unscanned scenes


Personnel
EROS CENTER
Role: TECHNICAL CONTACT
Phone: 605-594-6151, 800-252-4547
Fax: 605-594-6589
Email: lta at usgs.gov
Contact Address:
LTA Customer Services
U.S. Geological Survey
EROS Center
47914 252nd Street
City: Sioux Falls
Province or State: SD
Postal Code: 57198-0001
Country: USA


LTA REPRESENTATIVE USGS EROS CENTER
Role: METADATA AUTHOR
Phone: 605-594-6151, 800-252-4547
Fax: 605-594-6589
Email: lta at usgs.gov
Contact Address:
LTA Customer Services
U.S. Geological Survey
EROS Center
47914 252nd Street
City: Sioux Falls
Province or State: South Dakota
Postal Code: 57198-0001
Country: USA


Extended Metadata Properties
(Click to view more)

Creation and Review Dates
DIF Creation Date: 1999-06-01
Last DIF Revision Date: 2018-11-08



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