Supplemental satellite communication enhancement techniques

• US 6,349,195 B1
• Filed: 03/04/1999
• Issued: 02/19/2002
• Est. Priority Date: 03/04/1999
• Status: Expired due to Term

• Current Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: TRW Limited (Zeppelin - Stiftung der Stadt Friedrichshafen)
• Inventors: Saunders, Oliver W.
• Primary Examiner(s): Trost, William
• Assistant Examiner(s): Tran, Congvan
• Application Number:
  US09/262,418
• Time in Patent Office: 1,083 Days
• Field of Search: 455/12.1, 455/13.1, 455/13.2, 455/13.3, 455/427, 455/430, 370/316, 244/159, 244/158.R
• US Class Current: 455/12.1
• CPC Class Codes: H04B 7/18519 Operations control, administration or maintenance

Abstract

Apparatus for enhancing the communication capabilities of a satellite communication system including an uplink receiver 40 deployable with a first satellite 20 and capable of receiving signals from a ground-based communication station 30. A first processor 50 deployable on satellite 20 is capable of processing signals from uplink receiver 40. A two-way link terminal 60 deployable with satellite 20 is capable of communication with a second two-way intersatellite communication link terminal 220 deployable with a second satellite 200. A first switch 100 deployable with satellite 20 enables signals from uplink receiver 40 to be utilized by communication link terminal 60 or processor 50. A downlink transmitter 80 deployable with satellite 20 is capable of transmitting signals to a ground-based communication station 90. A second switch 110 deployable with satellite 20 enables signals from communication link terminal 60 or first processor 50 to be utilized by downlink transmitter 80.

Claims

1. In a satellite communication system, a method of enhancing the communication capabilities of said system comprising in combination:

deploying a first satellite into an orbital slot at a first point in time, said first satellite being capable of communicating with a second satellite;

deploying said second satellite at a second point in time later than said first point in time after a need for communication between the first and second satellites has been confirmed, whereby the communication capabilities of said first satellite are expanded to intersatellite capabilities by launching said second satellite after said first satellite is in said orbital slot;

deploying an uplink receiver with said first satellite, said uplink receiver being capable of receiving communication signals from a first ground-based communication station;

deploying a processor with said first satellite, said processor being capable of processing said communication signals from said uplink receiver;

deploying a first two-way intersatellite communication link terminal operable within a first range with said first satellite, said first terminal being capable of communication with a second two-way intersatellite communication link terminal deployable with said second satellite capable of receiving intersatellite signals from beyond said first range;

deploying a downlink transmitter with said first satellite, said downlink transmitter being capable of transmitting signals to a second ground-based communication station; and

deploying a switch with said first satellite enabling signals from said uplink receiver to be utilized by said first intersatellite communication link terminal or said first processor and enabling signals from said first intersatellite communication link terminal or said first processor to be utilized by said downlink transmitter;

whereby the communication capabilities of said first satellite are expanded to intersatellite capabilities beyond said first range by launching said second satellite after said first satellite is in said orbital slot.

2. A method, as claimed in claim 1, wherein said deploying a switch comprises deploying a switch that initiates switching in response to information in at least one of said communication signals.

3. A method, as claimed in claim 1, wherein said launching said second satellite comprises launching said second satellite into said orbital slot, whereby the communication capability supported at said orbital slot may be enhanced.

4. A method, as claimed in claim 1, wherein said deploying an uplink receiver comprises deploying an antenna and apparatus capable of converting from carrier frequency to intermediate frequency.

5. A method, as claimed in claim 1, wherein said deploying a processor comprises deploying a bent pipe repeater capable of shifting the frequency of said communication signals received by said uplink receiver to a downlink frequency.

6. In a satellite communication system, a method of enhancing the communication capabilities of said system comprising in combination:

deploying a first satellite into an orbital slot at a first point in time, said first satellite being capable of communicating with a second satellite;

deploying said second satellite at a second point in time later than said first point in time after a need for communication between the first and second satellites has been confirmed, whereby the communication capabilities of said first satellite are expanded to intersatellite capabilities by launching said second satellite after said first satellite is in said orbital slot;

deploying an uplink receiver with said first satellite, said uplink receiver capable of receiving communication signals from a first ground-based communication station;

deploying a processor with said first satellite capable of processing said signals from said uplink receiver;

deploying a first two-way intersatellite communication link terminal operable within a first range with said first satellite;

deploying a second two-way intersatellite communication link terminal operable within said first range with said second satellite and capable of communicating with said first communication link terminal;

deploying a third two-way intersatellite communication link terminal operable beyond said first range with said second satellite and coupled to said second intersatellite communication link terminal;

deploying a downlink transmitter with said first satellite capable of transmitting signals to a second ground-based communication station; and

deploying a switch with said first satellite enabling signals from said uplink receiver to be utilized by said first intersatellite communication link terminal or said processor and enabling signals from said first intersatellite communication link terminal or said processor to be utilized by said downlink transmitter.

7. A method, as claimed in claim 6, wherein said deploying a switch comprises deploying a switch that initiates switching in response to information in at least one of said communication signals.

8. A method, as claimed in claim 6, wherein said deploying an uplink receiver comprises deploying an antenna and apparatus capable of converting the frequency of said signals received by said uplink receiver from carrier frequency to intermediate frequency.

9. A method, as claimed in claim 6, wherein said deploying a processor comprises deploying a bent pipe repeater capable of shifting the frequency of said signals received by said uplink receiver to a downlink frequency.

10. In a satellite communication system, a method of enhancing the communication capabilities of said system comprising in combination:

deploying a first satellite into an orbital slot at a first point in time, said first satellite being capable of communicating with a second satellite;

deploying said second satellite at a second point in time later than said first point in time after a need for communication between the first and second satellites has been confirmed, whereby the communication capabilities of said first satellite are expanded to intersatellite capabilities by launching said second satellite after said first satellite is in said orbital slot;

deploying uplink receiver means with said first satellite, said uplink receiver means being for receiving communication signals from a first ground-based communication station;

deploying processor means with said first satellite for processing said signals from said uplink receiver means;

deploying first two-way intersatellite communication link terminal means operable within a first range with said first satellite for communicating with a second two-way intersatellite communication link terminal deployable with a second satellite capable of receiving intersatellite signals from beyond said first range;

deploying downlink transmitter means deployable with said first satellite for transmitting signals to a second ground-based communication station; and

deploying with said first satellite means for enabling signals from said uplink receiver means to be utilized by said first intersatellite communication link terminal means or said first processor means and for enabling signals from said first intersatellite communication link terminal means or said first processor means to be utilized by said downlink transmitter means, whereby the communication capabilities of said first satellite are expanded to intersatellite capabilities beyond said first range by launching said second satellite after said first satellite is in said orbital slot.

11. A method, as claimed in claim 10, wherein said deploying means for enabling comprises deploying means for initiating enabling in response to information in said communication signals.

12. A method, as claimed in claim 10, wherein said deploying said second satellite comprises deploying said second satellite into said orbital slot, whereby the processing supported at said orbital slot may be enhanced.

13. A method, as claimed in claim 10, wherein said deploying uplink receiver means comprises deploying an antenna and means for converting from carrier frequency to intermediate frequency.

14. A method, as claimed in claim 10, wherein said deploying processor means comprises deploying bent pipe repeater means for shifting the frequency of said signals to a downlink frequency.

15. In a satellite communication system, a method of enhancing the communication capabilities of said system comprising in combination:

deploying a first satellite into an orbital slot at a first point in time, said first satellite being capable of communicating with a second satellite;

deploying said second satellite at a second point in time later than said first point in time after a need for communication between the first and second satellites has been confirmed, whereby the communication capabilities of said first satellite are expanded to intersatellite capabilities by launching said second satellite after said first satellite is in said orbital slot;

deploying uplink receiver means with said first satellite, said uplink receiver means being for receiving communication signals from a first ground-based communication station;

deploying processor means with said first satellite for processing said signals from said uplink receiver means;

deploying first intersatellite communication link terminal means with said first satellite for transmitting and receiving signals within a first range;

deploying second intersatellite communication link terminal means with said second satellite for communicating with said first intersatellite communication link terminal means within said first range;

deploying third intersatellite communication link terminal means with said second satellite and coupled to said second intersatellite communication link terminal means for communicating with a third satellite beyond said first range;

deploying downlink transmitter means with said first satellite for transmitting said signals to a second ground-based communication station; and

deploying with said first satellite means for enabling signals from said uplink receiver means to be utilized by said first intersatellite communication link terminal means or said processor means and for enabling signals from said first intersatellite communication link terminal means or from said processor means to be utilized by said downlink transmitter means.

16. A method, as claimed in claim 15, wherein said deploying means for enabling comprises deploying means for initiating enabling in response to information in said communication signals.

17. A method, as claimed in claim 15, wherein said deploying uplink receiver means comprises deploying an antenna and means for converting from carrier frequency to intermediate frequency.

18. A method, as claimed in claim 15, wherein said deploying processor means comprises deploying bent pipe repeater means for shifting the frequency of said signals to a downlink frequency.