GB2457581B - Shallow water radio communications network - Google Patents

Shallow water radio communications network

Info

Publication number
GB2457581B
GB2457581B GB0902734.3A GB0902734A GB2457581B GB 2457581 B GB2457581 B GB 2457581B GB 0902734 A GB0902734 A GB 0902734A GB 2457581 B GB2457581 B GB 2457581B
Authority
GB
United Kingdom
Prior art keywords
communications network
radio communications
shallow water
water radio
shallow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0902734.3A
Other versions
GB0902734D0 (en
GB2457581A (en
Inventor
Mark Rhodes
Brendan Hyland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WFS Technologies Ltd
Original Assignee
WFS Technologies Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WFS Technologies Ltd filed Critical WFS Technologies Ltd
Publication of GB0902734D0 publication Critical patent/GB0902734D0/en
Publication of GB2457581A publication Critical patent/GB2457581A/en
Application granted granted Critical
Publication of GB2457581B publication Critical patent/GB2457581B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/40—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by components specially adapted for near-field transmission
    • H04B5/48—Transceivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
    • H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0682—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission using phase diversity (e.g. phase sweeping)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
GB0902734.3A 2008-02-25 2009-02-19 Shallow water radio communications network Expired - Fee Related GB2457581B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0803348.2A GB0803348D0 (en) 2008-02-25 2008-02-25 Shallow water radio communications network

Publications (3)

Publication Number Publication Date
GB0902734D0 GB0902734D0 (en) 2009-04-01
GB2457581A GB2457581A (en) 2009-08-26
GB2457581B true GB2457581B (en) 2012-11-28

Family

ID=39284465

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0803348.2A Ceased GB0803348D0 (en) 2008-02-25 2008-02-25 Shallow water radio communications network
GB0902734.3A Expired - Fee Related GB2457581B (en) 2008-02-25 2009-02-19 Shallow water radio communications network

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0803348.2A Ceased GB0803348D0 (en) 2008-02-25 2008-02-25 Shallow water radio communications network

Country Status (1)

Country Link
GB (2) GB0803348D0 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11750300B2 (en) 2005-06-15 2023-09-05 CSignum Ltd. Mobile device underwater communications system and method
US10735107B2 (en) 2005-06-15 2020-08-04 Wfs Technologies Ltd. Communications system
US7711322B2 (en) 2005-06-15 2010-05-04 Wireless Fibre Systems Underwater communications system and method
GB201303328D0 (en) 2013-02-25 2013-04-10 Wfs Technologies Ltd Underwater communication network
GB201520340D0 (en) * 2015-11-18 2015-12-30 Wfs Technologies Ltd Communication system network
TWI813807B (en) 2018-11-30 2023-09-01 芬蘭商順妥公司 Antenna assembly for a wrist worn device
GB2579400B (en) * 2018-11-30 2022-01-12 Suunto Oy Antenna assembly for operation underwater and in air
US11522276B1 (en) * 2019-07-09 2022-12-06 Hrl Laboratories, Llc Distributed semi-autonomous phased arrays for subsurface VLF transmission
US11581954B1 (en) 2019-07-09 2023-02-14 Hrl Laboratories, Llc Array of VLF scatterers for control of electromagnetic wave propagation on the ocean surface

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994010629A1 (en) * 1992-10-27 1994-05-11 Northeastern University A receiver for receiving a plurality of asynchronously transmitted signals
US20050288061A1 (en) * 2002-07-31 2005-12-29 Em Microelectronic - Marin Sa Portable receiver with reduced dispersion
US20060194587A1 (en) * 2005-02-25 2006-08-31 Jacob Sharony System and method for asset location in wireless networks
US20060286931A1 (en) * 2005-06-15 2006-12-21 Mark Rhodes Underwater communications system and method
WO2006134327A2 (en) * 2005-06-13 2006-12-21 Wireless Fibre Systems Ltd Underwater navigation
US20070127422A1 (en) * 2005-12-07 2007-06-07 Belcea John M System and method for computing the position of a mobile device operating in a wireless network
WO2007072066A1 (en) * 2005-12-23 2007-06-28 Wireless Fibre Systems Ltd Transmission of underwater electromagnetic radiation through the seabed
JP2007323391A (en) * 2006-06-01 2007-12-13 Nec Corp Submarine sensor network system and method for configuring submarine sensor network
WO2008109929A1 (en) * 2007-03-09 2008-09-18 Commonwealth Scientific And Industrial Research Organisation Remote monitoring of underwater objects

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994010629A1 (en) * 1992-10-27 1994-05-11 Northeastern University A receiver for receiving a plurality of asynchronously transmitted signals
US20050288061A1 (en) * 2002-07-31 2005-12-29 Em Microelectronic - Marin Sa Portable receiver with reduced dispersion
US20060194587A1 (en) * 2005-02-25 2006-08-31 Jacob Sharony System and method for asset location in wireless networks
WO2006134327A2 (en) * 2005-06-13 2006-12-21 Wireless Fibre Systems Ltd Underwater navigation
US20060286931A1 (en) * 2005-06-15 2006-12-21 Mark Rhodes Underwater communications system and method
US20070127422A1 (en) * 2005-12-07 2007-06-07 Belcea John M System and method for computing the position of a mobile device operating in a wireless network
WO2007072066A1 (en) * 2005-12-23 2007-06-28 Wireless Fibre Systems Ltd Transmission of underwater electromagnetic radiation through the seabed
JP2007323391A (en) * 2006-06-01 2007-12-13 Nec Corp Submarine sensor network system and method for configuring submarine sensor network
WO2008109929A1 (en) * 2007-03-09 2008-09-18 Commonwealth Scientific And Industrial Research Organisation Remote monitoring of underwater objects

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
S. Feldmann, K. Kyamakya, A. Zapater, and Z. Lue, "An Indoor Bluetooth-Based Positioning System: Concept, Implementation and Experimental Evaluation", in Proc. International Conference on Wireless Networks, 2003, pp109-113. *

Also Published As

Publication number Publication date
GB0902734D0 (en) 2009-04-01
GB0803348D0 (en) 2008-04-02
GB2457581A (en) 2009-08-26

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20110915 AND 20110921

746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 20130128

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20150219