IT1182741B - Perfezionamento nei sistemi di telecomunicazioni via satellite utilizzanti la tecnica ss-tdna - Google Patents
Perfezionamento nei sistemi di telecomunicazioni via satellite utilizzanti la tecnica ss-tdnaInfo
- Publication number
- IT1182741B IT1182741B IT48177/85A IT4817785A IT1182741B IT 1182741 B IT1182741 B IT 1182741B IT 48177/85 A IT48177/85 A IT 48177/85A IT 4817785 A IT4817785 A IT 4817785A IT 1182741 B IT1182741 B IT 1182741B
- Authority
- IT
- Italy
- Prior art keywords
- tdna
- improvement
- technique
- systems via
- telecommunications systems
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
- H04B7/212—Time-division multiple access [TDMA]
- H04B7/2125—Synchronisation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT48177/85A IT1182741B (it) | 1985-06-06 | 1985-06-06 | Perfezionamento nei sistemi di telecomunicazioni via satellite utilizzanti la tecnica ss-tdna |
US07/026,611 US4763129A (en) | 1985-06-06 | 1986-06-05 | SS-TDMA technique telecommunication satellite systems |
PCT/IT1986/000041 WO1986007512A1 (en) | 1985-06-06 | 1986-06-05 | Improvement to ss-tdma technique telecommunication satellite systems |
EP86903544A EP0226609A1 (en) | 1985-06-06 | 1986-06-05 | Improvement to ss-tdma technique telecommunication satellite systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT48177/85A IT1182741B (it) | 1985-06-06 | 1985-06-06 | Perfezionamento nei sistemi di telecomunicazioni via satellite utilizzanti la tecnica ss-tdna |
Publications (3)
Publication Number | Publication Date |
---|---|
IT8548177A0 IT8548177A0 (it) | 1985-06-06 |
IT8548177A1 IT8548177A1 (it) | 1986-12-06 |
IT1182741B true IT1182741B (it) | 1987-10-05 |
Family
ID=11265028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT48177/85A IT1182741B (it) | 1985-06-06 | 1985-06-06 | Perfezionamento nei sistemi di telecomunicazioni via satellite utilizzanti la tecnica ss-tdna |
Country Status (4)
Country | Link |
---|---|
US (1) | US4763129A (it) |
EP (1) | EP0226609A1 (it) |
IT (1) | IT1182741B (it) |
WO (1) | WO1986007512A1 (it) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1334292C (en) * | 1986-10-06 | 1995-02-07 | Andrew E. Turner | Apogee at constant time-of-day equatorial (ace) orbit |
IT1211458B (it) * | 1987-11-04 | 1989-10-26 | Selenia Spazio Spa | Controllore della commutazione di bordo di un satellite del tipo con commutazione a bordo |
JP2595603B2 (ja) * | 1988-01-11 | 1997-04-02 | 日本電気株式会社 | 要求割付多元接続制御方式 |
US5239670A (en) * | 1989-11-30 | 1993-08-24 | Motorola, Inc. | Satellite based global paging system |
US5010317A (en) * | 1989-11-30 | 1991-04-23 | Motorola, Inc. | Satellite based simulcast paging system |
JP2684119B2 (ja) * | 1989-12-14 | 1997-12-03 | モトローラ・インコーポレーテッド | ページング通信装置および方法 |
US5414431A (en) * | 1990-01-02 | 1995-05-09 | Gte Spacenet Corporation | Satellite communication system |
JPH0555975A (ja) * | 1991-08-26 | 1993-03-05 | Fujitsu Ltd | 衛星同報通信方式及び衛星同報通信装置 |
US5353311A (en) * | 1992-01-09 | 1994-10-04 | Nec Corporation | Radio transmitter |
FR2723279B1 (fr) * | 1994-07-29 | 1996-09-06 | Europ Agence Spatiale | Systeme d'emission numerique par satellite |
US6188874B1 (en) * | 1997-06-27 | 2001-02-13 | Lockheed Martin Corporation | Control and telemetry signal communication system for geostationary satellites |
AU8405498A (en) | 1997-07-14 | 1999-02-08 | Hughes Electronics Corporation | Immediate channel assignment in a wireless system |
US6560461B1 (en) | 1997-08-04 | 2003-05-06 | Mundi Fomukong | Authorized location reporting paging system |
US5936570A (en) * | 1998-03-05 | 1999-08-10 | Teledesic Llc | Low-earth orbit satellite acquisition and synchronization system using a beacon signal |
US6553225B1 (en) | 1999-02-03 | 2003-04-22 | Wei Zhao | Apparatus and method for positioning single-offset zones in a spot beam coverage area to maximize call duration in a satellite-based communications network |
US6332069B1 (en) | 1999-02-10 | 2001-12-18 | Hughes Electronics Corporation | Apparatus and method for grouping carriers to minimize the occurrence of call blocking in a satellite-based communications network |
GB2450680B (en) * | 2007-06-22 | 2012-05-30 | Ubiquisys Ltd | Controlling timing of synchronization updates |
US10122527B1 (en) | 2018-03-23 | 2018-11-06 | Northrop Grumman Systems Corporation | Signal phase tracking with high resolution, wide bandwidth and low phase noise using compound phase locked loop |
ES2835318T3 (es) | 2018-06-06 | 2021-06-22 | St Eng Idirect Europe Cy Nv | Sistema para sincronizar un segmento terrestre a un satélite de salto de haz |
CN112514284B (zh) | 2018-07-31 | 2022-09-27 | St艾迪瑞科工程(欧洲)有限公司 | 卫星通信发射器 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4150335A (en) * | 1977-08-22 | 1979-04-17 | Communications Satellite Corporation | Highly reliable distribution control unit with improved control capability |
US4181886A (en) * | 1977-08-22 | 1980-01-01 | Communications Satellite Corporation | Distribution control unit providing simultaneous hybrid FDMA and SS-TDMA operation in a transitional satellite switched system |
US4188578A (en) * | 1978-05-19 | 1980-02-12 | Bell Telephone Laboratories, Incorporated | Satellite communication system which concurrently transmits a scanning spot beam and a plurality of fixed spot beams |
-
1985
- 1985-06-06 IT IT48177/85A patent/IT1182741B/it active
-
1986
- 1986-06-05 EP EP86903544A patent/EP0226609A1/en not_active Withdrawn
- 1986-06-05 US US07/026,611 patent/US4763129A/en not_active Expired - Fee Related
- 1986-06-05 WO PCT/IT1986/000041 patent/WO1986007512A1/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP0226609A1 (en) | 1987-07-01 |
WO1986007512A1 (en) | 1986-12-18 |
US4763129A (en) | 1988-08-09 |
IT8548177A1 (it) | 1986-12-06 |
IT8548177A0 (it) | 1985-06-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19940628 |