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DTSTART:20260308T030000
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DTSTAMP:20260805T212528Z
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DTSTART;TZID=America/Los_Angeles:20260729T120000
DTEND;TZID=America/Los_Angeles:20260729T130000
DESCRIPTION:Abstract:\n\nModern U.S. Navy and Marine Corps operations in li
 ttoral and maritime environments increasingly require secure\, non-radio-f
 requency (RF) communication links to maintain operational tempo under stri
 ct emissions control (EMCON). Visible light communication (VLC) offers an 
 alternative to congested RF bands\, but conventional intensity-modulated o
 ptical links can produce visible flicker and remain vulnerable to visual d
 etection.\n\nThis seminar explores a steganographic approach that embeds d
 ata in the polarization state of visible white light. Because polarization
 —not optical intensity—is modulated\, the communications link is imper
 ceptible to human observers and standard intensity sensors. Standard shipb
 oard\, harbor\, and industrial lighting can therefore provide ambient illu
 mination while simultaneously transmitting a covert data stream.\n\nThe ca
 pability need not require specialized optical receivers. By exploiting bou
 ndary-reflection physics at the air-water interface through Fresnel’s eq
 uations\, the boundary acts as a natural polarization filter. Tactical ope
 rators\, maritime infrastructure\, and unmanned platforms can recover embe
 dded data using low-cost\, unmodified commodity cameras\, including off-th
 e-shelf webcams and mobile devices.\n\nThe seminar will introduce VLC\, re
 view experimental validations of polarized optical signals through turbid 
 and agitated water\, and discuss low-cost hardware approaches for robust c
 overt communications in maritime and industrial settings.\n\nSpeaker(s): \
 , CDR Don Barber\n\nBldg: 232\,  833 Dyer Road\, Monterey\, California\, U
 nited States\, 93943
LOCATION:Bldg: 232\,  833 Dyer Road\, Monterey\, California\, United States
 \, 93943
ORGANIZER:christopher.gaytan1@nps.edu
SEQUENCE:21
SUMMARY:Hiding in Plain Light: Low-Cost\, Covert Visible Light Communicatio
 n in the Maritime Environment
URL;VALUE=URI:https://events.vtools.ieee.org/m/571416
X-ALT-DESC:Description: <br /><p><span style="border: 0px\; font-style: inh
 erit\; font-variant: inherit\; font-stretch: inherit\; font-size: 12pt\; l
 ine-height: inherit\; font-family: Aptos\, sans-serif\; font-optical-sizin
 g: inherit\; font-size-adjust: inherit\; font-kerning: inherit\; font-feat
 ure-settings: inherit\; font-variation-settings: inherit\; font-language-o
 verride: inherit\; margin: 0px\; padding: 0px\; vertical-align: baseline\;
  color: black\;">Abstract:</span></p>\n<p class="isSelectedEnd">Modern U.S
 . Navy and Marine Corps operations in littoral and maritime environments i
 ncreasingly require secure\, non-radio-frequency (RF) communication links 
 to maintain operational tempo under strict emissions control (EMCON). Visi
 ble light communication (VLC) offers an alternative to congested RF bands\
 , but conventional intensity-modulated optical links can produce visible f
 licker and remain vulnerable to visual detection.</p>\n<p class="isSelecte
 dEnd">This seminar explores a steganographic approach that embeds data in 
 the polarization state of visible white light. Because polarization&mdash\
 ;not optical intensity&mdash\;is modulated\, the communications link is im
 perceptible to human observers and standard intensity sensors. Standard sh
 ipboard\, harbor\, and industrial lighting can therefore provide ambient i
 llumination while simultaneously transmitting a covert data stream.</p>\n<
 p class="isSelectedEnd">The capability need not require specialized optica
 l receivers. By exploiting boundary-reflection physics at the air-water in
 terface through Fresnel&rsquo\;s equations\, the boundary acts as a natura
 l polarization filter. Tactical operators\, maritime infrastructure\, and 
 unmanned platforms can recover embedded data using low-cost\, unmodified c
 ommodity cameras\, including off-the-shelf webcams and mobile devices.</p>
 \n<p>The seminar will introduce VLC\, review experimental validations of p
 olarized optical signals through turbid and agitated water\, and discuss l
 ow-cost hardware approaches for robust covert communications in maritime a
 nd industrial settings.</p>\n<p>&nbsp\;</p>
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