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Title:
UNDERWATER WIRELESS OPTICAL COMMUNICATION UNIT AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/013628
Kind Code:
A3
Abstract:
An underwater wireless optical communication, UWOC, unit (30) for underwater deployment on a submerged earth layer (12) or structure (14, 16). The UWOC unit is configured for wireless optical communication in an underwater environment, and comprises an optical transmitter (36), an anidolic optical receiver (38), and a processor (44). The optical transmitter is configured to transmit data by emitting an optical signal (80) into the surroundings. The optical receiver includes an optical detector (62), which is omnidirectionally sensitive and configured to receive further optical signals approaching substantially along an azimuthal plane orthogonal to a nominal axis (A) through the UWOC unit. The processor is coupled to the optical receiver, and configured to process received further optical signals. The unit may be configured to determine an inter-unit distance between this unit and a second unit, by sending an optical interrogation signal to the second unit, and receiving an optical response signal from the second unit.

Inventors:
JONGSMA ARNOUD MARC (NL)
VAN WEEREN DENNIS (NL)
LUBBES ARIS (NL)
Application Number:
PCT/NL2018/050467
Publication Date:
April 11, 2019
Filing Date:
July 11, 2018
Export Citation:
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Assignee:
FUGRO TECH BV (NL)
International Classes:
H04B10/112; H04B13/02
Domestic Patent References:
WO2008027072A22008-03-06
WO2016088157A12016-06-09
Foreign References:
US20060008275A12006-01-12
US20160156420A12016-06-02
Other References:
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KHAN MAHMUDUR ET AL: "GPS-Free Maintenance of A Free-Space-Optical Link Between Two Autonomous Mobiles", IEEE TRANSACTIONS ON MOBILE COMPUTING, IEEE SERVICE CENTER, LOS ALAMITOS, CA, US, vol. 16, no. 6, 1 June 2017 (2017-06-01), pages 1644 - 1657, XP011648712, ISSN: 1536-1233, [retrieved on 20170504], DOI: 10.1109/TMC.2016.2602834
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DANWEI WANG ET AL: "Time of flight based two way ranging for real time locating systems", ROBOTICS AUTOMATION AND MECHATRONICS (RAM), 2010 IEEE CONFERENCE ON, 1 June 2010 (2010-06-01), Piscataway, NJ, USA, pages 199 - 205, XP055562043, ISBN: 978-1-4244-6503-3, DOI: 10.1109/RAMECH.2010.5513188
ZAFER SAHINOGLU ET AL: "Ranging in the IEEE 802.15.4a Standard", 2006 IEEE ANNUAL WIRELESS AND MICROWAVE TECHNOLOGY CONFERENCE, 1 December 2006 (2006-12-01), pages 1 - 5, XP055562049, ISBN: 978-1-4244-0849-8, DOI: 10.1109/WAMICON.2006.351897
Attorney, Agent or Firm:
NEDERLANDSCH OCTROOIBUREAU (NLO) (NL)
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