GB2439882A - A system and method for processing satellite communication data - Google Patents
A system and method for processing satellite communication data Download PDFInfo
- Publication number
- GB2439882A GB2439882A GB0720846A GB0720846A GB2439882A GB 2439882 A GB2439882 A GB 2439882A GB 0720846 A GB0720846 A GB 0720846A GB 0720846 A GB0720846 A GB 0720846A GB 2439882 A GB2439882 A GB 2439882A
- Authority
- GB
- United Kingdom
- Prior art keywords
- band
- frequencies
- satellite
- mobiles
- signals
- 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.)
- Granted
Links
- 238000004891 communication Methods 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 2
- 238000013507 mapping Methods 0.000 abstract 2
- 238000012544 monitoring process Methods 0.000 abstract 2
- 238000004458 analytical method Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18567—Arrangements for providing additional services to the basic mobile satellite telephony service
-
- 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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
-
- 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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
-
- 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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18532—Arrangements for managing transmission, i.e. for transporting data or a signalling message
-
- 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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
-
- 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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18558—Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
-
- 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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18565—Arrangements for preventing unauthorised access or for providing user protection
-
- 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
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18593—Arrangements for preventing unauthorised access or for providing user protection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/2281—Call monitoring, e.g. for law enforcement purposes; Call tracing; Detection or prevention of malicious calls
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Technology Law (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
Abstract
The present invention provides an apparatus and method for intercepting and monitoring communications between target mobiles and a main station of a satellite communication system, wherein communication between the mobiles and a satellite is achieved by using a first-band spot beams, chosen by the mobiles and wherein communication between the satellite and the main station is achieved by using a wideband second-band link, and wherein the satellite is operable to change the mapping scheme of the first-band frequencies to the second-band frequencies, the apparatus comprises: at least one RF second-band and at least one RF first-band receive antenna which transmits the received signals to at least one RF second-band and at least one first-band receiver respectively; an intermediate frequency RF distributor which receives signals from said RF second-band and RF first-band receivers and splits the transmission into groups of frequencies; a plurality of demodulators which are tuned to cover sequentially the first-band frequency spectrum, for extracting identification codes of target mobiles and decryption messages; a wide angle mapping unit which receives the second-band signals from said intermediate frequency distributor, analyses and maps the received frequencies according to their time occurrence, and correlates said frequencies with said first-band frequencies; means for recording and monitoring said communications.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0805980A GB2445491B (en) | 2005-04-20 | 2006-04-20 | A system and method for processing satellite communication data |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/097,904 US7183912B2 (en) | 2003-03-14 | 2005-04-01 | PIR motion sensor utilizing sum and difference sensor signals |
IL168149A IL168149A (en) | 2005-04-20 | 2005-04-20 | System and method for processing satellite communication data |
US11/134,780 US7755052B2 (en) | 2003-03-14 | 2005-05-20 | PIR motion sensor |
PCT/IL2006/000490 WO2006111974A1 (en) | 2005-04-20 | 2006-04-20 | A system and method for processing satellite communication data |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0720846D0 GB0720846D0 (en) | 2007-12-05 |
GB2439882A true GB2439882A (en) | 2008-01-09 |
GB2439882B GB2439882B (en) | 2008-06-11 |
Family
ID=38835069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0720846A Expired - Fee Related GB2439882B (en) | 2005-04-01 | 2006-04-20 | A system and method for processing satellite communication data |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2439882B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5892811A (en) * | 1995-12-04 | 1999-04-06 | Motorola, Inc. | Radio telecommunication network and method for unobtrusive call interception via transcoder bypass |
US5960324A (en) * | 1998-06-30 | 1999-09-28 | Motorola, Inc. | Method for unobtrusive interception of satellite communication |
US20010036821A1 (en) * | 1994-04-19 | 2001-11-01 | Jay L. Gainsboro | Computer-based method and apparatus for controlling, monitoring, recording and reporting wireless communications |
US6823185B1 (en) * | 2000-06-19 | 2004-11-23 | Motorola, Inc. | Systems and methods for performing authorized intercept in a satellite-based communications system |
-
2006
- 2006-04-20 GB GB0720846A patent/GB2439882B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010036821A1 (en) * | 1994-04-19 | 2001-11-01 | Jay L. Gainsboro | Computer-based method and apparatus for controlling, monitoring, recording and reporting wireless communications |
US5892811A (en) * | 1995-12-04 | 1999-04-06 | Motorola, Inc. | Radio telecommunication network and method for unobtrusive call interception via transcoder bypass |
US5960324A (en) * | 1998-06-30 | 1999-09-28 | Motorola, Inc. | Method for unobtrusive interception of satellite communication |
US6823185B1 (en) * | 2000-06-19 | 2004-11-23 | Motorola, Inc. | Systems and methods for performing authorized intercept in a satellite-based communications system |
Non-Patent Citations (1)
Title |
---|
YAO TS "A re-programmable receiver architecture for wireless signal interception" PROCEEDINGS OF THE SPIE - THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING, 23 September 2003 pages 510-516, XP002389961 * |
Also Published As
Publication number | Publication date |
---|---|
GB2439882B (en) | 2008-06-11 |
GB0720846D0 (en) | 2007-12-05 |
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PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20190420 |