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  2. AN/UQQ-2 Surveillance Towed Array Sensor System - Wikipedia

    en.wikipedia.org/wiki/AN/UQQ-2_Surveillance...

    The active component transmits an audio signal between 100 Hz and 500 Hz from an array suspended below the ship while the passive SURTASS array is towed miles behind to receive the signal after it had reflected off the submarine. The active LFA system is an updated version of the fixed low frequency surveillance system known as Project Artemis.

  3. Scam Spotting: What Are the 5 Most Fake Reviewed Amazon ... - AOL

    www.aol.com/finance/scam-spotting-5-most-fake...

    On Dec. 5, Saoud Khalifah, the founder and CEO of FakeSpot, posted a tweet targeting the five most fake reviewed categories on Amazon. The tweet comes "after the record breaking Black Friday/Cyber...

  4. SOSUS - Wikipedia

    en.wikipedia.org/wiki/SOSUS

    Sound Surveillance System (SOSUS) was the original name for a submarine detection system based on passive sonar developed by the United States Navy to track Soviet submarines. The system's true nature was classified with the name and acronym SOSUS classified as well.

  5. List of unexplained sounds - Wikipedia

    en.wikipedia.org/wiki/List_of_unexplained_sounds

    Upsweep is an unidentified sound detected on the American NOAA's equatorial autonomous hydrophone arrays. This sound was present when the Pacific Marine Environmental Laboratory began recording its sound surveillance system, SOSUS, in August 1991. It consists of a long train of narrow-band upsweeping sounds of several seconds in duration each.

  6. This Is What an Amazon Email Scam Looks Like - AOL

    www.aol.com/lifestyle/amazon-email-scam-looks...

    “An Amazon email scam can look exactly like a real Amazon email, or can be poorly crafted, and everything in between,” according to Alex Hamerstone, a director with the security-consulting ...

  7. Sonar - Wikipedia

    en.wikipedia.org/wiki/Sonar

    Sonar (sound navigation and ranging or sonic navigation and ranging) [2] is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, measure distances , communicate with or detect objects on or under the surface of the water, such as other vessels.

  8. Underwater acoustic communication - Wikipedia

    en.wikipedia.org/wiki/Underwater_acoustic...

    The terms UQC and AN/WQC-2 follow the nomenclature of the Joint Electronics Type Designation System. [18] The type designation "UQC" stands for General Utility (multi use), Sonar and Underwater Sound and Communications (Receiving/Transmitting, two way). The "W" in WQC stands for Water Surface and Underwater combined.

  9. Criticism of Amazon - Wikipedia

    en.wikipedia.org/wiki/Criticism_of_Amazon

    [full citation needed] Amazon allgedly deleted negative reviews of Scientology-related items, despite the reviews' compliance with comments guidelines. [364] [365] In November 2012, it was reported that Amazon.co.uk deleted "a wave of reviews by authors of their fellow writers' books in what is believed to be a response to [a] 'sock puppet ...