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  2. Optical ground wire - Wikipedia

    en.wikipedia.org/wiki/Optical_ground_wire

    An OPGW cable contains a tubular structure with one or more optical fibers in it, surrounded by layers of steel and aluminum wire. The OPGW cable is run between the tops of high-voltage electricity pylons. The conductive part of the cable serves to bond adjacent towers to earth ground, and shields the high-voltage conductors from lightning ...

  3. Deletion of United States government data - Wikipedia

    en.wikipedia.org/wiki/Deletion_of_United_States...

    Agencies of the United States government share open data for many uses. There is a robust ecosystem of civic technology, research, and business applications which rely on access to government data. [1] Individual agencies share data on their own platforms. In 2009, Data.gov was established

  4. Link 1 - Wikipedia

    en.wikipedia.org/wiki/Link_1

    Link 1 is a point-to-point, duplex, non-encrypted, digital NATO Tactical Data Link (TDL) Standard for the automatic exchange of Track and Strobe data, combined with link and data management messages between ground based ASACS-elements / e.g. CRC and CAOC, specific units (TACCS / MC) and data link buffers (SSSB, CSI).

  5. Optical attached cable - Wikipedia

    en.wikipedia.org/wiki/Optical_attached_cable

    Three different types of fibre-optic cable have been developed for installation on overhead power utility lines: Optical Ground Wire (OPGW), All-Dielectric Self-Supporting (ADSS) cable and Optical Attached Cable (OPAC). Each type has a different set of properties and is therefore better suited to a particular set of circumstances.

  6. Link 16 - Wikipedia

    en.wikipedia.org/wiki/Link_16

    Link 16 is a TDMA-based secure, jam-resistant, high-speed digital data link that operates in the radio frequency band 960–1,215 MHz, allocated in line with the International Telecommunication Union (ITU) Radio regulations to the aeronautical radionavigation service and to the radionavigation satellite service.

  7. United States Space Surveillance Network - Wikipedia

    en.wikipedia.org/wiki/United_States_Space...

    The amount of satellite tracking data accumulated required creation or expansion of organizations and equipment to sift through and catalog the objects. The need for real-time detection and tracking information to deal with Soviet satellite launches led on 19 December 1958 to ARPA's implementation of Executive Order 50-59 to establish a ...

  8. Tracking and data relay satellite - Wikipedia

    en.wikipedia.org/wiki/Tracking_and_data_relay...

    A tracking and data relay satellite (TDRS) is a type of communications satellite that forms part of the Tracking and Data Relay Satellite System (TDRSS) used by NASA and other United States government agencies for communications to and from independent "User Platforms" such as satellites, balloons, aircraft, the International Space Station, and ...

  9. Argos (satellite system) - Wikipedia

    en.wikipedia.org/wiki/Argos_(satellite_system)

    The worldwide tracking and environmental monitoring system is the results from Franco-American cooperation. In addition to satellite data collection , the main feature of the Argos system is its to ability to geographically locate the data source from any location on Earth using the Doppler effect ; [ 2 ] which refers to the apparent change in ...

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