GB2439882A - A system and method for processing satellite communication data - Google Patents

A system and method for processing satellite communication data Download PDF

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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
Application number
GB0720846A
Other versions
GB2439882B (en
GB0720846D0 (en
Inventor
Benjamin Giloh
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.)
Elta Systems Ltd
Original Assignee
Elta Systems 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
Priority claimed from US11/097,904 external-priority patent/US7183912B2/en
Priority claimed from IL168149A external-priority patent/IL168149A/en
Priority claimed from US11/134,780 external-priority patent/US7755052B2/en
Application filed by Elta Systems Ltd filed Critical Elta Systems Ltd
Priority to GB0805980A priority Critical patent/GB2445491B/en
Publication of GB0720846D0 publication Critical patent/GB0720846D0/en
Publication of GB2439882A publication Critical patent/GB2439882A/en
Application granted granted Critical
Publication of GB2439882B publication Critical patent/GB2439882B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04B7/185—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.
GB0720846A 2005-04-01 2006-04-20 A system and method for processing satellite communication data Expired - Fee Related GB2439882B (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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