IL88263A - Navigation system - Google Patents
Navigation systemInfo
- Publication number
- IL88263A IL88263A IL88263A IL8826388A IL88263A IL 88263 A IL88263 A IL 88263A IL 88263 A IL88263 A IL 88263A IL 8826388 A IL8826388 A IL 8826388A IL 88263 A IL88263 A IL 88263A
- Authority
- IL
- Israel
- Prior art keywords
- navigation system
- navigation
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/04—Control of altitude or depth
- G05D1/06—Rate of change of altitude or depth
- G05D1/0607—Rate of change of altitude or depth specially adapted for aircraft
- G05D1/0653—Rate of change of altitude or depth specially adapted for aircraft during a phase of take-off or landing
- G05D1/0676—Rate of change of altitude or depth specially adapted for aircraft during a phase of take-off or landing specially adapted for landing
- G05D1/0684—Rate of change of altitude or depth specially adapted for aircraft during a phase of take-off or landing specially adapted for landing on a moving platform, e.g. aircraft carrier
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/70—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using electromagnetic waves other than radio waves
- G01S1/703—Details
- G01S1/7032—Transmitters
- G01S1/7034—Mounting or deployment thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/70—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using electromagnetic waves other than radio waves
- G01S1/703—Details
- G01S1/7032—Transmitters
- G01S1/7038—Signal details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/12—Systems for determining distance or velocity not using reflection or reradiation using electromagnetic waves other than radio waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/16—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
- G01S5/163—Determination of attitude
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/04—Control of altitude or depth
- G05D1/06—Rate of change of altitude or depth
- G05D1/0607—Rate of change of altitude or depth specially adapted for aircraft
- G05D1/0653—Rate of change of altitude or depth specially adapted for aircraft during a phase of take-off or landing
- G05D1/0676—Rate of change of altitude or depth specially adapted for aircraft during a phase of take-off or landing specially adapted for landing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S2201/00—Indexing scheme relating to beacons or beacon systems transmitting signals capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters
- G01S2201/01—Indexing scheme relating to beacons or beacon systems transmitting signals capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters adapted for specific applications or environments
- G01S2201/06—Aircraft navigation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Aviation & Aerospace Engineering (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Traffic Control Systems (AREA)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL88263A IL88263A (en) | 1988-11-02 | 1988-11-02 | Navigation system |
CA000604782A CA1338747C (fr) | 1988-11-02 | 1989-07-05 | Systemes de navigation et d'atterrissage automatiques |
GB8915897A GB2224613B (en) | 1988-11-02 | 1989-07-11 | Navigation system |
ZA896371A ZA896371B (en) | 1988-11-02 | 1989-08-21 | Navigation system |
DE3927851A DE3927851A1 (de) | 1988-11-02 | 1989-08-23 | System fuer die bestimmung der raeumlichen position eines sich bewegenden objekts und zum fuehren seiner bewegung |
FR8912643A FR2638544B1 (fr) | 1988-11-02 | 1989-09-27 | Systeme pour determiner la position spatiale d'un objet en mouvement, applique notamment a l'atterrissage des avions |
US07/801,630 US5235513A (en) | 1988-11-02 | 1991-12-04 | Aircraft automatic landing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL88263A IL88263A (en) | 1988-11-02 | 1988-11-02 | Navigation system |
Publications (2)
Publication Number | Publication Date |
---|---|
IL88263A0 IL88263A0 (en) | 1989-06-30 |
IL88263A true IL88263A (en) | 1993-03-15 |
Family
ID=11059379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL88263A IL88263A (en) | 1988-11-02 | 1988-11-02 | Navigation system |
Country Status (7)
Country | Link |
---|---|
US (1) | US5235513A (fr) |
CA (1) | CA1338747C (fr) |
DE (1) | DE3927851A1 (fr) |
FR (1) | FR2638544B1 (fr) |
GB (1) | GB2224613B (fr) |
IL (1) | IL88263A (fr) |
ZA (1) | ZA896371B (fr) |
Families Citing this family (77)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2231220B (en) * | 1989-03-15 | 1993-07-14 | Plessey Co Plc | Improvements relating to position control arrangements |
JP2667924B2 (ja) * | 1990-05-25 | 1997-10-27 | 東芝テスコ 株式会社 | 航空機ドッキングガイダンス装置 |
GB2251750B (en) * | 1991-01-09 | 1994-10-26 | Gec Ferranti Defence Syst | An optical system for the determination of the position of an object |
IL98498A (en) * | 1991-06-14 | 1994-01-25 | Vardi Shlomo | Electro-optical monitoring system for vehicles |
GB2259823A (en) * | 1991-09-17 | 1993-03-24 | Radamec Epo Limited | Navigation system |
DE4142037A1 (de) * | 1991-12-19 | 1993-06-24 | Dornier Gmbh | Start- und landesystem |
GB2267360B (en) * | 1992-05-22 | 1995-12-06 | Octec Ltd | Method and system for interacting with floating objects |
RU2019472C1 (ru) * | 1992-07-10 | 1994-09-15 | Дмитрий Анатольевич Сафьян | Телевизионная система для руления, взлета и посадки самолетов в сложных метеоусловиях |
EP0631214A1 (fr) * | 1993-05-27 | 1994-12-28 | Oerlikon Contraves AG | Méthode pour l'attérissage automatique des avions et dispositif pour la réalisation de la méthode |
FR2707755B1 (fr) * | 1993-07-13 | 1995-09-29 | Inst Nat Rech Inf Automat | Installation et procédé pour le remorquage à distance de véhicules terrestres. |
JP3417655B2 (ja) * | 1994-05-18 | 2003-06-16 | 株式会社東芝 | 電子運航票管理システムのユーザインタフェース装置 |
JP2673112B2 (ja) * | 1994-06-22 | 1997-11-05 | コナミ株式会社 | 移動体の遠隔制御装置 |
WO1996006007A1 (fr) * | 1994-08-19 | 1996-02-29 | Consilior Luftfahrttechnologie Gmbh | Systeme de navigation pour helicoptere |
FR2727082A1 (fr) * | 1994-11-22 | 1996-05-24 | Chauthai Luc | Installation de guidage sur trajectoire d'un aeronef en phase d'atterrissage |
US5768151A (en) * | 1995-02-14 | 1998-06-16 | Sports Simulation, Inc. | System for determining the trajectory of an object in a sports simulator |
AU705284B2 (en) * | 1995-02-21 | 1999-05-20 | Konami Co., Ltd. | A system for remotely controlling a movable object |
DE19521600A1 (de) * | 1995-06-14 | 1996-12-19 | Bodenseewerk Geraetetech | Landeverfahren für unbemannte Luftfahrzeuge |
US5717593A (en) * | 1995-09-01 | 1998-02-10 | Gvili; Michael E. | Lane guidance system |
IL115977A (en) * | 1995-11-14 | 1998-10-30 | Israel Aircraft Ind Ltd | System and method for automatically landing an aircraft |
US5716032A (en) * | 1996-04-22 | 1998-02-10 | United States Of America As Represented By The Secretary Of The Army | Unmanned aerial vehicle automatic landing system |
ATE213843T1 (de) * | 1996-05-14 | 2002-03-15 | Allied Signal Inc | Radargestützte boden- und hinderniswarnung |
EP0899580A3 (fr) * | 1997-08-29 | 2000-02-02 | Kabushiki Kaisha Toshiba | Système de localisation de cible et de guidage d'avion pour l'approche |
GB2329292A (en) * | 1997-09-12 | 1999-03-17 | Orad Hi Tec Systems Ltd | Camera position sensing system |
US6625299B1 (en) * | 1998-04-08 | 2003-09-23 | Jeffrey Meisner | Augmented reality technology |
GB2353909B (en) * | 1999-08-28 | 2004-03-17 | John Alfred Cawkwell | Robot positioning and motion mechanism |
US20030152248A1 (en) * | 2000-04-11 | 2003-08-14 | Spark Peter Edmunds | Self calibration of an array of imaging sensors |
SE521820C2 (sv) * | 2000-10-13 | 2003-12-09 | Saab Ab | Metod och anordning vid automatisk landning |
US8958654B1 (en) * | 2001-04-25 | 2015-02-17 | Lockheed Martin Corporation | Method and apparatus for enhancing three-dimensional imagery data |
US7940299B2 (en) * | 2001-08-09 | 2011-05-10 | Technest Holdings, Inc. | Method and apparatus for an omni-directional video surveillance system |
FR2835314B1 (fr) * | 2002-01-25 | 2004-04-30 | Airbus France | Procede de guidage d'un aeronef en phase finale d'atterrissage et dispositif correspondant |
DE10255634A1 (de) * | 2002-11-28 | 2004-06-24 | EMT Ingenieurbüro für Elektro-Mechanische Technologien Dipl.-Ing. Hartmut Euer | Radiointerferometrische Führungseinrichtung für die automatischen Steuerung unbemannter Fluggeräte insbesondere während der Endphase der Landung |
JP4253239B2 (ja) * | 2003-10-07 | 2009-04-08 | 富士重工業株式会社 | 画像認識を用いた航法装置 |
US8949011B2 (en) * | 2005-09-14 | 2015-02-03 | Novatel Inc. | Helicopter ship board landing system |
FR2894347B1 (fr) * | 2005-12-02 | 2008-02-01 | Thales Sa | Systeme d'atterrissage autonome et automatique pour drones. |
WO2007095282A2 (fr) | 2006-02-13 | 2007-08-23 | Max-Viz, Inc. | Systeme et procede d'acquisition synchrone de lumiere de source a impulsions pour effectuer la surveillance de l'operation de vol d'un avion |
US20080117626A1 (en) * | 2006-06-07 | 2008-05-22 | David Dean | Long-range illuminator using multiple radiation dispersion angles |
US7693617B2 (en) | 2006-09-19 | 2010-04-06 | The Boeing Company | Aircraft precision approach control |
FR2908532B1 (fr) * | 2006-11-10 | 2008-12-26 | Thales Sa | Methode et systeme de suivi par aeronef d'une trajectoire en descente |
US8234021B2 (en) * | 2007-06-20 | 2012-07-31 | Honeywell International Inc. | Synthetic instrument landing system |
KR101008259B1 (ko) * | 2008-09-03 | 2011-01-13 | 한국항공우주연구원 | 영상신호를 이용한 항공기의 자동착륙 시스템 및 그 제어방법 |
FR2937170B1 (fr) * | 2008-10-13 | 2011-09-30 | Dcns | Systeme de determination de la position d'un drone en phase d'approche d'une plate-forme notamment navale, equipee d'une zone d'appontage |
KR101021799B1 (ko) | 2008-11-12 | 2011-03-17 | 주식회사 대한항공 | 무인항공기 자동회수 유도 제어 방법 |
EP2380065A2 (fr) | 2008-12-19 | 2011-10-26 | Xollai, Llc | Système et méthode de pilotage d'un véhicule autonome |
GB0823330D0 (en) * | 2008-12-22 | 2009-01-28 | Qinetiq Ltd | Aircraft landing monitoring system |
WO2010108301A1 (fr) * | 2009-03-27 | 2010-09-30 | Yu Qifeng | Procédé de guidage au sol par vidéométrie pour l'atterrissage d'un avion ou la récupération de véhicules aériens sans équipage |
DE102010008807A1 (de) | 2010-02-22 | 2011-08-25 | Engelskirchen, Jürgen, Dipl.-Ing., 22395 | Verfahren zur selbsttätigen Bahnsteuerung eines steuerbaren Objektes |
US8749797B1 (en) * | 2010-03-02 | 2014-06-10 | Advanced Optical Systems Inc. | System and method for remotely determining position and orientation of an object |
RU2451317C1 (ru) * | 2010-10-26 | 2012-05-20 | Борис Иванович Волков | Способ наведения группы управляемых объектов и система его осуществления |
DE102010051561A1 (de) * | 2010-11-18 | 2012-05-24 | Rheinmetall Defence Electronics Gmbh | Automatisierte Landung unbemannter Flugobjekte |
DE102010052474B4 (de) * | 2010-11-26 | 2017-07-27 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Flugführungssystem |
KR101157484B1 (ko) * | 2010-12-14 | 2012-06-20 | 주식회사 대한항공 | 무인항공기 자동회수 방법 |
US8483890B2 (en) | 2011-04-12 | 2013-07-09 | Honeywell International Inc. | Identification of ship state tonal parameters for use in relative GPS shipboard landing systems |
JP5775354B2 (ja) * | 2011-04-28 | 2015-09-09 | 株式会社トプコン | 離着陸ターゲット装置及び自動離着陸システム |
EP2527787B1 (fr) | 2011-05-23 | 2019-09-11 | Kabushiki Kaisha TOPCON | Procédé de capture d'image de photographie aérienne et appareil de capture d'image de photographie aérienne |
JP5882693B2 (ja) | 2011-11-24 | 2016-03-09 | 株式会社トプコン | 航空写真撮像方法及び航空写真撮像装置 |
CN102501982B (zh) * | 2011-12-01 | 2014-08-06 | 中国科学院西安光学精密机械研究所 | 飞行器助降*** |
CN102514718B (zh) * | 2011-12-01 | 2014-07-02 | 中国科学院西安光学精密机械研究所 | 一种辅助飞行器助降方法 |
JP6122591B2 (ja) | 2012-08-24 | 2017-04-26 | 株式会社トプコン | 写真測量用カメラ及び航空写真装置 |
JP6055274B2 (ja) | 2012-10-31 | 2016-12-27 | 株式会社トプコン | 航空写真測定方法及び航空写真測定システム |
CN104006790A (zh) * | 2013-02-21 | 2014-08-27 | 成都海存艾匹科技有限公司 | 基于视觉的飞机降落辅助装置 |
US9547991B2 (en) | 2013-05-23 | 2017-01-17 | Honeywell International Inc. | Aircraft precision approach and shipboard landing control system and method |
KR101494654B1 (ko) | 2013-06-21 | 2015-02-24 | 퍼스텍주식회사 | 무인항공기 착륙유도 방법 및 장치와 착륙제어 방법 및 장치 |
FR3022358A1 (fr) * | 2014-06-12 | 2015-12-18 | Terabee Sas | Systeme de reperage dynamique et procede de guidage automatique |
US9087451B1 (en) | 2014-07-14 | 2015-07-21 | John A. Jarrell | Unmanned aerial vehicle communication, monitoring, and traffic management |
KR101537324B1 (ko) * | 2014-09-25 | 2015-07-16 | 엘아이지넥스원 주식회사 | 영상기반 비행체 자동 이착륙 유도 시스템 |
KR101539065B1 (ko) * | 2014-09-25 | 2015-07-22 | 엘아이지넥스원 주식회사 | 광방출기를 이용한 영상기반 비행체 자동 이착륙 유도 방법 |
CN104309803B (zh) * | 2014-10-27 | 2017-07-21 | 广州极飞科技有限公司 | 旋翼飞行器自动降落***及方法 |
CN104469306A (zh) * | 2014-12-08 | 2015-03-25 | 河北汉光重工有限责任公司 | 一种飞机接地参数检测装置 |
WO2016204843A2 (fr) * | 2015-03-27 | 2016-12-22 | Planck Aerosystems, Inc. | Système et procédé de navigation d'aéronef sans pilote |
FR3036497B1 (fr) * | 2015-05-19 | 2017-06-16 | Airbus Operations Sas | Procede et systeme de gestion de donnees d'un radioaltimetre d'aeronef. |
CN105068548B (zh) * | 2015-08-12 | 2019-06-28 | 北京贯中精仪科技有限公司 | 无人机着陆引导*** |
CN105278541B (zh) * | 2015-09-02 | 2018-08-17 | 盐城智博科技有限公司 | 一种飞行器辅助降落控制方法及*** |
US10529221B2 (en) | 2016-04-19 | 2020-01-07 | Navio International, Inc. | Modular approach for smart and customizable security solutions and other applications for a smart city |
US20180005459A1 (en) * | 2016-06-30 | 2018-01-04 | Ge Aviation Systems Llc | Triggering Scheme for Communicating Engine Data |
US11086337B2 (en) | 2017-06-20 | 2021-08-10 | Planck Aerosystems Inc. | Systems and methods for charging unmanned aerial vehicles on a moving platform |
NL2021199B1 (en) * | 2018-06-28 | 2020-01-07 | Fugro N V | Surveying instrument for and surveying method of surveying reference points |
US10969228B2 (en) * | 2018-06-05 | 2021-04-06 | Novatel Inc. | Relative position navigation system for multiple moving vehicles |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3484549A (en) * | 1968-02-02 | 1969-12-16 | Colin J Ricketts | Television-assisted aircraft landing and monitoring system |
US3653769A (en) * | 1970-03-06 | 1972-04-04 | Us Navy | Stadiametric ranging system |
US3917196A (en) * | 1974-02-11 | 1975-11-04 | Boeing Co | Apparatus suitable for use in orienting aircraft flight for refueling or other purposes |
GB2005950B (en) * | 1977-10-07 | 1982-02-10 | Secretary Industry Brit | Position detecting apparatus |
EP0007790A1 (fr) * | 1978-08-01 | 1980-02-06 | Imperial Chemical Industries Plc | Véhicule sans conducteur porteur de détecteurs non-directionnels et autoguidé par signaux lumineux |
DE2944337A1 (de) * | 1979-11-02 | 1982-06-03 | Vereinigte Flugtechnische Werke Gmbh, 2800 Bremen | Anordnung zur automatischen landung eines luftfahrzeuges |
US4554543A (en) * | 1983-03-08 | 1985-11-19 | The United States Of America As Represented By The Secretary Of The Air Force | Glide slope indicator system |
US4672562A (en) * | 1984-12-11 | 1987-06-09 | Honeywell Inc. | Method and apparatus for determining location and orientation of objects |
EP0221643B1 (fr) * | 1985-08-30 | 1992-01-22 | Texas Instruments Incorporated | Système de navigation à télévision pour un robot mobile rôdant |
US4866626A (en) * | 1987-09-18 | 1989-09-12 | Egli Werner H | Navigation by a video-camera sensed ground array |
US4862164A (en) * | 1988-02-09 | 1989-08-29 | The United States Of America As Represented By The Secretary Of The Army | Infrared aircraft landing system |
-
1988
- 1988-11-02 IL IL88263A patent/IL88263A/xx not_active IP Right Cessation
-
1989
- 1989-07-05 CA CA000604782A patent/CA1338747C/fr not_active Expired - Fee Related
- 1989-07-11 GB GB8915897A patent/GB2224613B/en not_active Expired - Fee Related
- 1989-08-21 ZA ZA896371A patent/ZA896371B/xx unknown
- 1989-08-23 DE DE3927851A patent/DE3927851A1/de not_active Withdrawn
- 1989-09-27 FR FR8912643A patent/FR2638544B1/fr not_active Expired - Fee Related
-
1991
- 1991-12-04 US US07/801,630 patent/US5235513A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
IL88263A0 (en) | 1989-06-30 |
US5235513A (en) | 1993-08-10 |
ZA896371B (en) | 1990-05-30 |
CA1338747C (fr) | 1996-11-26 |
GB2224613B (en) | 1993-09-29 |
GB8915897D0 (en) | 1989-08-31 |
FR2638544B1 (fr) | 1996-03-01 |
GB2224613A (en) | 1990-05-09 |
DE3927851A1 (de) | 1990-05-03 |
FR2638544A1 (fr) | 1990-05-04 |
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