RU2007132918A - Оптимальный сигнал для каротажа морского дна - Google Patents

Оптимальный сигнал для каротажа морского дна Download PDF

Info

Publication number
RU2007132918A
RU2007132918A RU2007132918/28A RU2007132918A RU2007132918A RU 2007132918 A RU2007132918 A RU 2007132918A RU 2007132918/28 A RU2007132918/28 A RU 2007132918/28A RU 2007132918 A RU2007132918 A RU 2007132918A RU 2007132918 A RU2007132918 A RU 2007132918A
Authority
RU
Russia
Prior art keywords
signal
frequencies
optimized
logging
amplitude ratios
Prior art date
Application number
RU2007132918/28A
Other languages
English (en)
Inventor
Дэйвид Кристофер РИЗ (GB)
Дэйвид Кристофер РИЗ
Original Assignee
Электромагнетик Геосервисез Ас (No)
Электромагнетик Геосервисез Ас
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 Электромагнетик Геосервисез Ас (No), Электромагнетик Геосервисез Ас filed Critical Электромагнетик Геосервисез Ас (No)
Publication of RU2007132918A publication Critical patent/RU2007132918A/ru

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/18Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging
    • G01V3/30Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for well-logging operating with electromagnetic waves

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Near-Field Transmission Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Claims (7)

1. Способ создания оптимизированного многочастотного электромагнитного сигнала, содержащий этапы, на которых получают параметры генерирования оптимизированного сигнала, используя длину смещения передатчик - приемник и смоделированное поведение сигнала, чтобы определить набор требуемых частот гармоник, оптимально подходящих для каротажа в исследуемом месте, и подходящих отношений амплитуд для требуемых частот гармоник; и используют передатчик для создания сигнала, соответствующего параметрам генерирования оптимизированного сигнала.
2. Способ по п.1, отличающийся тем, что способ содержит этапы, на которых моделируют место, подлежащее исследованию посредством каротажа морского дна, используя известные параметры этого места, и объединяют эту информацию с длиной смещения передатчик - приемник и смоделированным поведением сигнала, чтобы определить набор требуемых частот сигнала, оптимально подходящих для каротажа в исследуемом месте, и подходящие отношения амплитуд для требуемых частот гармоник.
3. Способ получения данных при каротаже морского дна для определения наличия и/или природы коллектора, содержащего углеводороды или воду, включающий передачу оптимизированного многочастотного электромагнитного сигнала, передаваемого антенной, причем сигнал содержит две или более требуемых частот гармоник с оптимизированными отношениями амплитуд, такими, что при нахождении приемника на максимальной дальности в приемнике принимается сигнал, по существу, с равными отношениями амплитуд на каждой частоте, причем полная мощность на требуемых частотах гармоник является максимизированной долей максимизированной мощности, подаваемой на передающую антенну.
4. Способ по п.3, отличающийся тем, что ток в антенне принимает только значения ±Imax , чтобы максимизировать полную мощность, подаваемую на передающую антенну; и это приводит к большей дальности приема сигнала.
5. Способ по п.4, отличающийся тем, что все, две или более, требуемые частоты являются гармониками одной частоты, и сигнал является периодическим во времени с периодом основной гармоники, для упрощения синтеза сигнала.
6. Способ по п.3, отличающийся тем, что, когда передающая антенна способна излучать вращающееся поле с круговой поляризацией, требуемые частоты гармоник все являются нечетными гармониками для обеспечения того, чтобы плоскость поляризации каждой требуемой частоты гармоники вращалась.
7. Способ по п.3, отличающийся тем, что сигнал содержит три или более требуемых частот гармоник с оптимизированными отношениями амплитуд.
RU2007132918/28A 2005-02-01 2006-01-27 Оптимальный сигнал для каротажа морского дна RU2007132918A (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0502064A GB2422673B (en) 2005-02-01 2005-02-01 Optimum signal for sea bed logging
GB0502064.9 2005-02-01

Publications (1)

Publication Number Publication Date
RU2007132918A true RU2007132918A (ru) 2009-03-10

Family

ID=34307796

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2007132918/28A RU2007132918A (ru) 2005-02-01 2006-01-27 Оптимальный сигнал для каротажа морского дна

Country Status (16)

Country Link
US (1) US20090134877A1 (ru)
EP (1) EP1846781B1 (ru)
CN (1) CN101133345B (ru)
AU (1) AU2006210690B2 (ru)
BR (1) BRPI0607121A2 (ru)
CA (1) CA2596394A1 (ru)
DK (1) DK1846781T3 (ru)
EG (1) EG24748A (ru)
ES (1) ES2556972T3 (ru)
GB (1) GB2422673B (ru)
MX (1) MX2007009301A (ru)
MY (1) MY142929A (ru)
NO (1) NO20074379L (ru)
PT (1) PT1846781E (ru)
RU (1) RU2007132918A (ru)
WO (1) WO2006082372A1 (ru)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2409900B (en) 2004-01-09 2006-05-24 Statoil Asa Processing seismic data representing a physical system
GB2435693A (en) 2006-02-09 2007-09-05 Electromagnetic Geoservices As Seabed electromagnetic surveying
GB2439378B (en) * 2006-06-09 2011-03-16 Electromagnetic Geoservices As Instrument for measuring electromagnetic signals
GB2442749B (en) 2006-10-12 2010-05-19 Electromagnetic Geoservices As Positioning system
US7667464B2 (en) * 2006-11-02 2010-02-23 Westerngeco L.L.C. Time segmentation of frequencies in controlled source electromagnetic (CSEM) applications
GB2445582A (en) 2007-01-09 2008-07-16 Statoil Asa Method for analysing data from an electromagnetic survey
AU2008299384B2 (en) 2007-05-14 2013-07-11 Ocean Floor Geophysics Inc. Underwater electric field electromagnetic prospecting system
EP2291683A4 (en) * 2008-06-24 2018-01-03 Exxonmobil Upstream Research Company Method for electromagnetic prospecting waveform design
US9015010B2 (en) 2008-09-24 2015-04-21 Exxonmobil Upstream Research Company Systems and methods for subsurface electromagnetic mapping
GB2466764B (en) 2008-10-02 2013-03-27 Electromagnetic Geoservices As Method for enhanced subsurface electromagnetic sensitivity
WO2014035543A1 (en) 2012-08-30 2014-03-06 Exxonmobil Upstream Research Company Processing methods for time division csem data
US9746577B2 (en) 2013-06-03 2017-08-29 Exxonmobil Upstream Research Company Uncertainty estimation of subsurface resistivity solutions
WO2016099989A1 (en) * 2014-12-17 2016-06-23 Schlumberger Canada Limited Systems and methods for acquiring measurements using electromagnetic tools
US10459109B2 (en) 2015-12-16 2019-10-29 Halliburton Energy Services, Inc. Multi-frequency focusing acquisition and processing in wellbore logging

Family Cites Families (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2077707A (en) * 1933-08-01 1937-04-20 Melton Benjamin Starr Electromagnetic prospecting method
US3182250A (en) * 1962-02-23 1965-05-04 Sun Oil Co Surface electrical prospecting apparatus utilizing current focusing electrode means
US4010413A (en) * 1971-08-23 1977-03-01 Geo-Nav, Inc. Plural frequency geological exploration system and method with phase comparison
US3806795A (en) * 1972-01-03 1974-04-23 Geophysical Survey Sys Inc Geophysical surveying system employing electromagnetic impulses
GB1456009A (en) * 1973-06-25 1976-11-17 Central Geophysics Ltd Method for exciting and detecing resonant oscillations from electronic conductors in the earth
DE2550715C3 (de) * 1975-11-12 1980-07-03 Diether-Alfred 5305 Alfter- Oedekoven Schroeder Schaltungsanordnung zum geophysikalischen Prospektieren aus einem Fahrzeug heraus
US4079309A (en) * 1976-09-03 1978-03-14 The United States Of America As Represented By The Secretary Of The Navy Method for determining changes in earth resistivity by measuring phase difference between magnetic field components
US4077686A (en) * 1977-01-10 1978-03-07 Kero Metal Products Co., Inc. Prefabricated metal storage cabinets
FR2390743A1 (fr) * 1977-05-09 1978-12-08 Geophysique Cie Gle Prospection electromagnetique du sous-sol par induction, associee a une prospection par sondage electrique
US4258321A (en) * 1978-03-09 1981-03-24 Neale Jr Dory J Radio geophysical surveying method and apparatus
US4446434A (en) * 1978-12-20 1984-05-01 Conoco Inc. Hydrocarbon prospecting method with changing of electrode spacing for the indirect detection of hydrocarbon reservoirs
SE419269B (sv) * 1979-11-29 1981-07-20 Boliden Ab Forfarande och anordning for bestemning av markens elektriska ledningsformaga
US4451789A (en) * 1981-09-28 1984-05-29 Nl Industries, Inc. Logging tool and method for measuring resistivity of different radial zones at a common depth of measurement
US4506225A (en) * 1981-12-28 1985-03-19 Barringer Research Limited Method for remote measurement of anomalous complex variations of a predetermined electrical parameter in a target zone
FR2519769B1 (fr) * 1982-01-12 1985-09-20 Thomson Csf Systeme de positionnement acoustique
US4494805A (en) * 1982-11-29 1985-01-22 Glen E. Beymer Equipment locker
US4500146A (en) * 1983-08-01 1985-02-19 Sioux Technology, Inc. Locker shelf assembly
US4583095A (en) * 1983-08-22 1986-04-15 Glen Peterson Radar seismograph improvement
GB8331546D0 (en) * 1983-11-25 1984-01-04 Exxon Research Engineering Co Polymeric compositions
US4835473A (en) * 1984-07-31 1989-05-30 Board Of Regents, The University Of Texas System Method using a d.c. source for determining resistivity distribution of the earth as a function of depth
US4652829A (en) * 1984-12-28 1987-03-24 Schlumberger Technology Corp. Electromagnetic logging apparatus with button antennas for measuring the dielectric constant of formation surrounding a borehole
US4835474A (en) * 1986-11-24 1989-05-30 Southwest Research Institute Method and apparatus for detecting subsurface anomalies
US4906575A (en) * 1987-03-06 1990-03-06 Chevron Research Company Phosphate compound that is used in a microbial profile modification process
US4986354A (en) * 1988-09-14 1991-01-22 Conoco Inc. Composition and placement process for oil field chemicals
GB8825435D0 (en) * 1988-10-31 1988-12-29 Cross T E Detection of non metallic material
US4965522A (en) * 1988-11-09 1990-10-23 Schlumberger Technology Corporation Multifrequency signal transmitter with attenuation of selected harmonies for an array induction well logging apparatus
US5103920A (en) * 1989-03-01 1992-04-14 Patton Consulting Inc. Surveying system and method for locating target subterranean bodies
US4992995A (en) * 1989-10-24 1991-02-12 Amoco Corporation Methods for attenuating noise in seismic data
US4926394A (en) * 1989-10-27 1990-05-15 Western Atlas International, Inc. Monte Carlo method for estimating lithology from seismic data
US5185578A (en) * 1990-01-17 1993-02-09 Stolar, Inc. Method for detecting anomalous geological zones by transmitting electromagnetic energy between spaced drillholes using different frequency ranges
CA2024429A1 (en) * 1990-08-31 1992-03-01 Vladimir M. Labuc Borehole deviation monitor
US5877995A (en) * 1991-05-06 1999-03-02 Exxon Production Research Company Geophysical prospecting
US5280284A (en) * 1991-06-11 1994-01-18 Johler J Ralph Method of determining the electrical properties of the earth by processing electromagnetic signals propagated through the earth from a capacitor
US5192952A (en) * 1991-06-11 1993-03-09 Johler J Ralph Method and apparatus for transmitting electromagnetic signals into the earth from a capacitor
US5486764A (en) * 1993-01-15 1996-01-23 Exxon Production Research Company Method for determining subsurface electrical resistance using electroseismic measurements
US6060885A (en) * 1993-10-14 2000-05-09 Western Atlas International, Inc. Method and apparatus for determining the resistivity and conductivity of geological formations surrounding a borehole
US5400030A (en) * 1994-02-09 1995-03-21 Exxon Production Research Company Detection and mapping of hydrocarbon reservoirs with radar waves
US5892361A (en) * 1994-03-14 1999-04-06 Baker Hughes Incorporated Use of raw amplitude and phase in propagation resistivity measurements to measure borehole environmental parameters
US6060884A (en) * 1994-03-14 2000-05-09 Meyer, Jr.; Wallace Harold Method and apparatus for measuring electromagnetic properties of materials in borehole environs and simultaneously determining the quality of the measurements
USD366376S (en) * 1994-05-05 1996-01-23 Suncast Corporation Mid-size football locker
US5905380A (en) * 1995-05-08 1999-05-18 Eaton Corporation Electromagnetic wave, reflective type, low cost, active proximity sensor for harsh environments
US5553407A (en) * 1995-06-19 1996-09-10 Vermeer Manufacturing Company Excavator data acquisition and control system and method of use
US6023168A (en) * 1995-08-21 2000-02-08 Schlumberger Technology Corporation Apparatus and method for measuring the resistivity of underground formations
GB2304895B (en) * 1995-08-25 1999-05-19 Geco Prakla Method of and apparatus for controlling the quality of processed seismic data
FR2738871B1 (fr) * 1995-09-19 1997-11-14 Elf Aquitaine Procede pour realiser une representation des textures d'une structure geologique
US6061412A (en) * 1995-10-05 2000-05-09 Westinghouse Electric Company Llc Nuclear reaction protection system
GB9521171D0 (en) * 1995-10-17 1995-12-20 Millar John W A Detection method
US5724309A (en) * 1996-03-06 1998-03-03 Chevron U.S.A. Inc. Method for geophysical processing and interpretation using instantaneous phase and its derivatives and their derivatives
US5886526A (en) * 1996-06-19 1999-03-23 Schlumberger Technology Corporation Apparatus and method for determining properties of anisotropic earth formations
US5901795A (en) * 1996-06-25 1999-05-11 Exxon Production Research Company Well collision avoidance
US5905657A (en) * 1996-12-19 1999-05-18 Schlumberger Technology Corporation Performing geoscience interpretation with simulated data
US5894450A (en) * 1997-04-15 1999-04-13 Massachusetts Institute Of Technology Mobile underwater arrays
US6188222B1 (en) * 1997-09-19 2001-02-13 Schlumberger Technology Corporation Method and apparatus for measuring resistivity of an earth formation
US6026913A (en) * 1997-09-30 2000-02-22 Halliburton Energy Services, Inc. Acoustic method of connecting boreholes for multi-lateral completion
US6041018A (en) * 1997-11-13 2000-03-21 Colorado School Of Mines Method for correcting amplitude and phase differences between time-lapse seismic surveys
NO310384B1 (no) * 1998-06-18 2001-06-25 Norges Geotekniske Inst Fremgangsmåte for detektering av reflektorer i en produksjonsbrönn ved hjelp av en radarlignende sende- ogmottakerinnretning
US6236211B1 (en) * 1998-06-18 2001-05-22 The United States Of America As Represented By The United States Secretary Of The Interior Induced polarization method using towed cable carrying transmitters and receivers for identifying minerals on the ocean floor
US6236212B1 (en) * 1998-06-22 2001-05-22 The United States Of America As Represented By The Secretary Of The Interior Induced polarization system using towed cable carrying transmitters and receivers for identifying minerals on the ocean floor
US6188221B1 (en) * 1998-08-07 2001-02-13 Van De Kop Franz Method and apparatus for transmitting electromagnetic waves and analyzing returns to locate underground fluid deposits
GB9818875D0 (en) * 1998-08-28 1998-10-21 Norske Stats Oljeselskap Method and apparatus for determining the nature of subterranean reservoirs
US6108605A (en) * 1998-12-16 2000-08-22 Western Atlas International, Inc. Low distortion digitally controlled transmitter for use in a well logging tool
DE60006647T2 (de) * 1999-01-13 2004-09-30 Vermeer Mfg. Co., Pella Automatisiertes bohrplanungsverfahren und vorrichtung zum horizontalen richtungsbohren
US6181138B1 (en) * 1999-02-22 2001-01-30 Halliburton Energy Services, Inc. Directional resistivity measurements for azimuthal proximity detection of bed boundaries
US6184685B1 (en) * 1999-02-22 2001-02-06 Halliburton Energy Services, Inc. Mulitiple spacing resistivity measurements with receiver arrays
AU3622200A (en) * 1999-03-12 2000-09-28 Profile Technologies, Inc. Dynamic electromagnetic methods for direct prospecting for oil
US6615949B1 (en) * 1999-06-03 2003-09-09 Baker Hughes Incorporated Acoustic isolator for downhole applications
GB0002422D0 (en) * 2000-02-02 2000-03-22 Norske Stats Oljeselskap Method and apparatus for determining the nature of subterranean reservoirs
CA2417832C (en) * 2000-08-14 2005-10-11 Statoil Asa Method and apparatus for determining the nature of subterranean reservoirs
AUPQ975100A0 (en) * 2000-08-29 2000-09-21 Siemensindustrial Services Ltd Re-locatable partial discharge transducer head
US6700526B2 (en) * 2000-09-08 2004-03-02 Witten Technologies Inc. Method and apparatus for identifying buried objects using ground penetrating radar
US20050035696A1 (en) * 2001-01-02 2005-02-17 Snap-On Incorporated Suspendable Locker
US6525539B2 (en) * 2001-03-15 2003-02-25 Witten Technologies Inc. Apparatus and method for locating subsurface objects in conductive soils by measurements of magnetic fields by induced currents with an array of multiple receivers
US7100496B2 (en) * 2001-03-23 2006-09-05 Tuttoespresso S.P.A. Unit for preparing beverages from soluble products
GB2383133A (en) * 2001-08-07 2003-06-18 Statoil Asa Investigation of subterranean reservoirs
GB2413188B (en) * 2001-08-07 2006-01-11 Electromagnetic Geoservices As Method and apparatus for determining the nature of subterranean reservoirs
US6867866B1 (en) * 2001-08-10 2005-03-15 Therma-Wave, Inc. CD metrology analysis using green's function
US7769572B2 (en) * 2001-09-07 2010-08-03 Exxonmobil Upstream Research Co. Method of imaging subsurface formations using a virtual source array
GB2382875B (en) * 2001-12-07 2004-03-03 Univ Southampton Electromagnetic surveying for hydrocarbon reservoirs
US6889449B2 (en) * 2002-05-07 2005-05-10 Steve Silver Sanitizing cabinet for sports equipment
GB2385923B (en) * 2002-05-24 2004-07-28 Statoil Asa System and method for electromagnetic wavefield resolution
US6842006B2 (en) * 2002-06-27 2005-01-11 Schlumberger Technology Corporation Marine electromagnetic measurement system
US20040017137A1 (en) * 2002-07-29 2004-01-29 Straub Andrew D. Locker display case
US6777940B2 (en) * 2002-11-08 2004-08-17 Ultima Labs, Inc. Apparatus and method for resistivity well logging
CN100339724C (zh) * 2002-12-10 2007-09-26 加利福尼亚大学董事会 利用受控源电磁场监测碳氢化合物储藏层的系统和方法
US6971728B2 (en) * 2003-08-18 2005-12-06 Ritter Tsai Combinative locker
US7042802B2 (en) * 2003-09-18 2006-05-09 Schlumberger Technology Corporation Determination of stress characteristics of earth formations
GB2412739B (en) * 2004-04-03 2008-08-06 Statoil Asa Electromagnetic wavefield analysis
GB2412741B (en) * 2004-04-03 2009-02-25 Statoil Asa Electromagnetic data processing
US7140434B2 (en) * 2004-07-08 2006-11-28 Schlumberger Technology Corporation Sensor system
GB2420855B (en) * 2004-12-02 2009-08-26 Electromagnetic Geoservices As Source for electromagnetic surveying
CA2625709A1 (en) * 2005-10-14 2007-04-26 Exxonmobil Upstream Research Company Method and apparatus for utilizing time division multiple waveform transmitting
GB2435693A (en) * 2006-02-09 2007-09-05 Electromagnetic Geoservices As Seabed electromagnetic surveying
GB2441786A (en) * 2006-09-15 2008-03-19 Electromagnetic Geoservices As Combined electromagnetic and seismic surveying
GB2442749B (en) * 2006-10-12 2010-05-19 Electromagnetic Geoservices As Positioning system
GB2445582A (en) * 2007-01-09 2008-07-16 Statoil Asa Method for analysing data from an electromagnetic survey

Also Published As

Publication number Publication date
MY142929A (en) 2011-01-31
CN101133345A (zh) 2008-02-27
GB2422673B (en) 2010-03-24
NO20074379L (no) 2007-10-24
GB2422673A (en) 2006-08-02
AU2006210690B2 (en) 2012-03-22
DK1846781T3 (en) 2015-11-23
GB0502064D0 (en) 2005-03-09
CA2596394A1 (en) 2006-08-10
PT1846781E (pt) 2016-01-22
US20090134877A1 (en) 2009-05-28
CN101133345B (zh) 2010-05-19
AU2006210690A1 (en) 2006-08-10
EG24748A (en) 2010-07-20
BRPI0607121A2 (pt) 2010-03-02
EP1846781A1 (en) 2007-10-24
MX2007009301A (es) 2007-09-21
ES2556972T3 (es) 2016-01-21
EP1846781B1 (en) 2015-09-30
GB2422673A8 (en) 2007-02-01
WO2006082372A1 (en) 2006-08-10

Similar Documents

Publication Publication Date Title
RU2007132918A (ru) Оптимальный сигнал для каротажа морского дна
RU2007130549A (ru) Электромагнитная разведка углеводородов в мелком море
WO2007011520A3 (en) Apparatus, circuitry, signals, probes and methods for cleaning and/or processing with sound
GB2486121A (en) Apparatus and methods of locating downhole anomalies
WO2006088800A3 (en) Methods and apparatus for beamforming applications
EA201000411A1 (ru) Способ управления группой морских сейсмических вибраторов для усиления низкочастотного выходного сигнала
WO2007114845A3 (en) Electrodes for low energy nuclear reaction power generators
EA199900629A1 (ru) Система геофизической разведки, использующая вибрационный источник сейсмических колебаний, который выдает составной сигнал с качающейся частотой
JP2004354224A (ja) 超音波送信装置、超音波送受信装置、および探知装置
TW200516886A (en) Method and apparatus to combine radio frequency signals
US20160285565A1 (en) Chip for transdermal emission or augmentation of energy
DE602005005026D1 (de) Sender mit vergrösserter ultrabreitband-(uwb-)benutzerkapazität unter verwendung von strahlformung
Wang et al. Directional bionic underwater communication method using a parametric acoustic array and recursive filtering
CN202995039U (zh) 基于频谱认知和分段跳频调频的水下物体探测系统
KR102167652B1 (ko) 수중환경 모니터링 시스템
Lee et al. Micro-modem for short-range underwater communication systems
WO2010068883A3 (en) Multi-frequency borehole imager
Mohammadgholiha et al. Enabling spatial multiplexing in guided waves-based communication: the case of quadrature amplitude modulation realized via discrete frequency steerable acoustic transducers
JP2019080227A (ja) パラメトリック方式を用いた水中音響mimo通信システム
Cheng et al. Parametric underwater transmission based on pattern time delay shift coding system
JP2003037567A (ja) 水中における無線通信装置
Fei et al. Underwater Acoustic Communication Based on Hyperbolic Frequency Modulated M-ary Binary Orthogonal Keying
CN203732728U (zh) 激震器前端部分及应用它的陆上电火花激震器
CN106452470B (zh) 一种消除信道尖峰脉冲噪声的无线通信系统及除噪方法
Marr et al. Acoustic data transfer limits using an underwater vehicle in very shallow water

Legal Events

Date Code Title Description
FA92 Acknowledgement of application withdrawn (lack of supplementary materials submitted)

Effective date: 20100419