Declassified_Satellite_Imagery_2_2002_Not provided

Declassified Satellite Imagery 2 (2002)

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  • Abstract
    Declassified satellite images provide an important worldwide record of land-surface change. With the success of the first release of classified satellite photography in 1995, images from U.S. military intelligence satellites KH-7 and KH-9 were declassified in accordance with Executive Order 12951 in 2002. The data were originally used for cartographic information and reconnaissance for U.S. intelligence agencies. Since the images could be of historical value for global change research and were no longer critical to national security, the collection was made available to the public. Keyhole (KH) satellite systems KH-7 and KH-9 acquired photographs of the Earth’s surface with a telescopic camera system and transported the exposed film through the use of 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 KH-7 surveillance system was a high resolution imaging system that was operational from July 1963 to June 1967. Approximately 18,000 black-and-white images and 230 color images are available from the 38 missions flown during this program. Key features for this program were larger area of coverage and improved ground resolution. The cameras acquired imagery in continuous lengthwise sweeps of the terrain. KH-7 images are 9 inches wide, vary in length from 4 inches to 500 feet long, and have a resolution of 2 to 4 feet. The KH-9 mapping program was operational from March 1973 to October 1980 and was designed to support mapping requirements and exact positioning of geographical points for the military. This was accomplished by using image overlap for stereo coverage and by using a camera system with a reseau grid to correct image distortion. The KH-9 framing cameras produced 9 x 18 inch imagery at a resolution of 20-30 feet. Approximately 29,000 mapping images were acquired from 12 missions. The original film sources 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.
  • Purpose
    These images of strategic targets in China and the former Soviet Union will be particularly valuable to historians and scholars of the Cold War period.

Data Identification Fields:

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    Processing Level

    Not provided

    Quality
    Collection Progress

    Complete

    Use Constraints
    There is no guarantee of warranty concerning the accuracy of these data. Users should be aware that temporal changes may have occurred since the data was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of their limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data set is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data set, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer.
    Access Constraints

    None. The images are available to the public through EarthExplorer and in Room 3320, the Cartographic Research Room, at the National Archives in College Park, MD. The National Archives is located at 8601 Adelphi Road. Free parking is available.

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    Science Keywords
    • EARTH SCIENCE
    • LAND SURFACE
    • SURFACE RADIATIVE PROPERTIES
    • ALBEDO
    • EARTH SCIENCE
    • LAND SURFACE
    • TOPOGRAPHY
    • TERRAIN ELEVATION
    • TOPOGRAPHICAL RELIEF MAPS
Other Descriptive Keywords
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Ancillary Keywords
  • imagery
  • EROS
ISO Topic Categories
  • IMAGERY/BASE MAPS/EARTH COVER
Additional Attributes
  • metadata.uuid
    STRING
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    Resolution Range Begin Range End Unit of Measure Accuracy

  • metadata.extraction_date
    STRING
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  • metadata.keyword_version
    FLOAT
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Acquisition Information Fields:

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Platforms
  • Not provided
    Instruments

Temporal Information Fields:

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Spatial Information Fields:

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    Coverage Type Zone Identifier Geometry Granule Representation
    HORIZONTAL CARTESIAN NO_SPATIAL
Location Keywords
    • GEOGRAPHIC REGION
    • GLOBAL

Data Centers

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  • DOI/USGS/EROS
    Multiple Roles

    ARCHIVER

    DISTRIBUTOR

    Earth Resources Observation and Science Center, U.S. Geological Survey, U.S. Department of the Interior

    This data center does not have any addresses listed.

    This data center does not have any contact mechanisms listed.

Data Contacts

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  • ANNIEPAT
    Metadata Author
    ANNIEPAT JOHNSON

    EROS
    Sioux Falls, SD 57198

  • ANNIEPAT
    Data Center Contact
    ANNIEPAT JOHNSON

    DOI/USGS/EROS

    EROS
    Sioux Falls, SD 57198

Collection Citations Fields:

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