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Re: Seismic & Acoustic Comms

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  • ozob99
    ... analog ... I found this page on post cold war monitoring of various sensors by Sandia: http://www.cmc.sandia.gov/Links/about/papers/SAND96-1379/tech.html
    Message 1 of 7 , May 12, 2003
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      --- In coldwarcomms@yahoogroups.com, "ozob99" <ozob99@y...> wrote:
      > The recent SOSUS topic reminded me of another type of Cold War
      > acoustic(& seismic) signal transmitted by wireline & RF comms:
      >
      > Intrusion detectors,exemplified by the Viet Nam era "IGLOO WHITE".
      >
      > One of many pages on it:
      >
      > http://home.att.net/~c.jeppeson/igloo_white.html
      >
      > I'm sure these have been used historically in our homeland &
      > especially post 911 at many sensitive places, e.g. Mt Weather,White
      > House,Ft Knox & other military and nuclear facilities,etc.Any
      > wirelines involved would probably be gov't cable or possibly a local
      > telco in some cases.
      >
      > I imagine the current devices transmit a digital rather than an
      analog
      > signal from the transducers,or should i say a digital analog as
      > opposed to a analog analog?
      >
      > Perhaps a member has some experience with a domestic system?


      I found this page on post cold war monitoring of various sensors by
      Sandia:

      http://www.cmc.sandia.gov/Links/about/papers/SAND96-1379/tech.html
    • ozob99
      The link is dead, here is another: http://www.dtic.mil/dtic/tr/fulltext/u2/a012650.pdf
      Message 2 of 7 , Dec 30, 2014
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        The link is dead, here is another:


        http://www.dtic.mil/dtic/tr/fulltext/u2/a012650.pdf
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