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  2. GLONASS - Wikipedia

    en.wikipedia.org/wiki/GLONASS

    It provides an alternative to Global Positioning System (GPS) and is the second navigational system in operation with global coverage and of comparable precision. Satellite navigation devices supporting both GPS and GLONASS have more satellites available, meaning positions can be fixed more quickly and accurately, especially in built-up areas ...

  3. AN/SPY-6 - Wikipedia

    en.wikipedia.org/wiki/AN/SPY-6

    The SPY-6 system consists of two primary radars and a radar suite controller (RSC) to coordinate the sensors. An S-band radar is to provide volume search, tracking, ballistic missile defense discrimination, and missile communications, while the X-band radar is to provide horizon search, precision tracking, missile communication, and terminal illumination of targets. [6]

  4. AN/SPY-3 - Wikipedia

    en.wikipedia.org/wiki/AN/SPY-3

    The system was introduced in the new Zumwalt-class destroyers and Gerald R. Ford-class aircraft carriers. On both of these classes, the AN/SPY-3 was originally to be combined with the S Band AN/SPY-4 under the designator "Dual Band Radar". In June 2010, Pentagon acquisition chief Ashton Carter announced that they will be removing the SPY-4 S ...

  5. AN/SPY-1 - Wikipedia

    en.wikipedia.org/wiki/AN/SPY-1

    The AN/SPY-1 [a] is a United States Navy passive electronically scanned array (PESA) 3D radar system manufactured by Lockheed Martin, and is a key component of the Aegis Combat System. The system is computer controlled and uses four complementary antennas to provide 360-degree coverage.

  6. List of USA satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_USA_satellites

    Fifth GPS Block III satellite, named Neil Armstrong: USA-320: 2022-01-13 2022-002CV Falcon 9 Block 5: Unknown ... spy satellite, has been spotted USA-339: 2022-11-01

  7. Stingray phone tracker - Wikipedia

    en.wikipedia.org/wiki/Stingray_phone_tracker

    The standard systems are not "high power" and thus can be overpowered by secret systems using much more boosted power that can then take over a user's cell phone. If overpowered that way, a cell phone will not indicate the change due to the secret radio being programmed to hide from normal detection.

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