CA2403280A1 - Suborbital communications system - Google Patents
Suborbital communications system Download PDFInfo
- Publication number
- CA2403280A1 CA2403280A1 CA002403280A CA2403280A CA2403280A1 CA 2403280 A1 CA2403280 A1 CA 2403280A1 CA 002403280 A CA002403280 A CA 002403280A CA 2403280 A CA2403280 A CA 2403280A CA 2403280 A1 CA2403280 A1 CA 2403280A1
- Authority
- CA
- Canada
- Prior art keywords
- communications
- communication
- airplane
- station
- antenna
- 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
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
-
- 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
- H04B7/18502—Airborne stations
- H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
- H04B7/18508—Communications with or from aircraft, i.e. aeronautical mobile service with satellite system used as relay, i.e. aeronautical 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
- H04B7/18502—Airborne stations
- H04B7/18504—Aircraft used as relay or high altitude atmospheric platform
Abstract
This disclosure provides a communications system using a span-loaded flying wing, traveling at relatively slow speeds, that can remain airborne for long periods of time. The communications system uses the airplane as a long term high altitude platform that can serve at least one of a number of potential functions. One function is to link to a ground station using radio wave signals and a satellite using optical signals. Another function is to serve as a relay station between ground communication nodes and individual end-users.
Because the aircraft can tightly hold a station, the end-user's antennas do not need to be continuously adjustable. For such a system, a large number of aircraft can be used, with the end-user antennas being configured for a narrow beamwidth so as to allow frequency reuse for different communication links.
Because the aircraft can tightly hold a station, the end-user's antennas do not need to be continuously adjustable. For such a system, a large number of aircraft can be used, with the end-user antennas being configured for a narrow beamwidth so as to allow frequency reuse for different communication links.
Claims (29)
1. A communications system, comprising:
a plurality of ground base stations, each ground base station being connected to at least one end-user communications device; and a suborbital platform carrying a communications device, wherein the plurality of ground base stations and the communications device are configured to maintain a plurality of communications signals, each communication signal linking the communications device to at least one of the plurality of ground base stations.
a plurality of ground base stations, each ground base station being connected to at least one end-user communications device; and a suborbital platform carrying a communications device, wherein the plurality of ground base stations and the communications device are configured to maintain a plurality of communications signals, each communication signal linking the communications device to at least one of the plurality of ground base stations.
2. The communications system of claim 1, wherein at least one of the plurality of ground base stations includes a wireless local loop, the wireless local loop establishing communication between the at least one of the plurality of ground base stations and at least one subscriber remote station, the at least one of the plurality of ground base stations linking the wireless local loop communications with the communications signal between the at least one of the plurality of ground base stations and the communications device.
3. The communication system of claim 2, wherein the at least one subscriber remote station is two or more cordless telephones, each cordless telephone being used by a subscriber not affiliated with the building housing the at least one of the plurality of ground base stations.
4. The communication system of claim 1, wherein the communications device is carried by an airplane configured to stay aloft without refueling for at least 200 hours.
5. The communication system of claim 1, wherein the communications device is carried by an airplane configured to stay aloft without refueling for at least 3000 hours.
6. A method of maintaining a communications link between a ground station and a suborbital platform, wherein the ground station communicates using an antenna that provides a communication signal of limited beamwidth, comprising:
positioning the suborbital platform and antenna such that the suborbital platform is within the beamwidth of the antenna's signal;
maintaining the antenna in a generally fixed location; and flying the suborbital platform in a pattern that maintains the suborbital platform within the beamwidth of the signal.
positioning the suborbital platform and antenna such that the suborbital platform is within the beamwidth of the antenna's signal;
maintaining the antenna in a generally fixed location; and flying the suborbital platform in a pattern that maintains the suborbital platform within the beamwidth of the signal.
7. The method of claim 6, wherein the airplane is substantially maintained within a station delimited by a 4000-foot diameter circle and a 100-foot altitude range.
8. The method of claim 6, wherein the step of flying is continued for at least 200 hours.
9. The method of claim 6, wherein the step of flying is continued for at least 3000 hours.
10. The method of claim 6, wherein the suborbital platform is an airplane.
11. A communications system for communicating between a satellite and a ground station, comprising:
a downward-pointing communications antenna on the satellite, the downward-pointing antenna having a limited signal beam-width;
an upward-pointing communications antenna on the ground station, the upward-pointing antenna having a limited signal beam-width, wherein the downward-pointing antenna and the upward-pointing antenna are aimed such that they delimit a region of airspace that is within both signal beam-widths; and a suborbital platform configured to fly a pattern entirely within the delimited region of airspace.
a downward-pointing communications antenna on the satellite, the downward-pointing antenna having a limited signal beam-width;
an upward-pointing communications antenna on the ground station, the upward-pointing antenna having a limited signal beam-width, wherein the downward-pointing antenna and the upward-pointing antenna are aimed such that they delimit a region of airspace that is within both signal beam-widths; and a suborbital platform configured to fly a pattern entirely within the delimited region of airspace.
12. The communication system of claim 11, wherein the suborbital platform is substantially maintained within a station delimited by a 4000-foot diameter circle and a 100-foot altitude range.
13. A communication system for providing communications between a ground station and a spacecraft in geosynchronous orbit, the ground station and the spacecraft having communications systems that are characterized by operating with given beamwidths, comprising:
a suborbital platform maintained at a non-equatorial latitude that prevents the ground station from being within the beamwidth of communication signals transmitted by the spacecraft toward the suborbital platform, and that prevents the spacecraft from being within the beamwidth of communication signals transmitted by the ground station toward the suborbital platform
a suborbital platform maintained at a non-equatorial latitude that prevents the ground station from being within the beamwidth of communication signals transmitted by the spacecraft toward the suborbital platform, and that prevents the spacecraft from being within the beamwidth of communication signals transmitted by the ground station toward the suborbital platform
14. The communication system of claim 13, wherein the suborbital platform is configured to operate for at least 200 hours.
15. The communication system of claim 13, wherein the suborbital platform is configured to operate for at least 3000 hours.
16. The communication system of claim 13, wherein the suborbital platform is configured to maintain the airplane within a station delimited by a 4000-foot diameter circle and a 100-foot altitude range.
17. A communication apparatus for communicating data between a terrestrial gateway and a plurality of terrestrial terminals, comprising:
an airplane; and a network carried by the airplane, and having at least three downward-pointing communication devices, each communication device defining a beamwidth for communication, the communication devices' beamwidths delimiting distinct terrestrial communication cells that include the terminals when the airplane is aloft in a predetermined station;
wherein the network is configured to maintain a communications signal carrying the data with the gateway; and wherein the communications devices are configured to route the data carried by the communication signal between the network and the plurality of terminals.
an airplane; and a network carried by the airplane, and having at least three downward-pointing communication devices, each communication device defining a beamwidth for communication, the communication devices' beamwidths delimiting distinct terrestrial communication cells that include the terminals when the airplane is aloft in a predetermined station;
wherein the network is configured to maintain a communications signal carrying the data with the gateway; and wherein the communications devices are configured to route the data carried by the communication signal between the network and the plurality of terminals.
18. The communications system of claim 17, wherein:
the network is configured to maintain additional communications signals carrying additional data with additional gateways; and the communications devices are further configured to route the data carried by the additional communication signals between the network and the plurality of terminals.
the network is configured to maintain additional communications signals carrying additional data with additional gateways; and the communications devices are further configured to route the data carried by the additional communication signals between the network and the plurality of terminals.
19. The communications system of claim 17, wherein the communications device is carried by an airplane configured to stay aloft without refueling for at least 200 hours.
20. The communications system of claim 17, wherein the communications device is carried by an airplane configured to stay aloft without refueling for at least 3000 hours.
21. The communications system of claim 17, wherein each terminal has a terminal antenna configured for carrying the communication signal, the terminal antenna being configured such that the airplane's entire station falls within the terminal antenna's beamwidth without any adjustment of the terminal antenna's aim.
22. The communications system of claim 21, wherein the terminal antenna includes no active tracking mechanism.
23. A communication system for communicating data between one or more data sources and a plurality of terrestrial terminals, comprising:
a plurality of airplanes;
a plurality of networks, each airplane carrying a network, each network having at least three downward-pointing communication devices, each communication device defining a beamwidth for communication, the communication devices' beamwidths delimiting distinct terrestrial communication cells that include the terminals when the airplane is aloft in a predetermined station;
and one or more gateways in communication with the one or more data sources, wherein each network is configured to maintain one or more communications signals carrying the data with one or more gateways;
wherein each communications device is configured to route data carried by its respective network's one or more communication signals between its respective network and one or more of the plurality of terminals.
a plurality of airplanes;
a plurality of networks, each airplane carrying a network, each network having at least three downward-pointing communication devices, each communication device defining a beamwidth for communication, the communication devices' beamwidths delimiting distinct terrestrial communication cells that include the terminals when the airplane is aloft in a predetermined station;
and one or more gateways in communication with the one or more data sources, wherein each network is configured to maintain one or more communications signals carrying the data with one or more gateways;
wherein each communications device is configured to route data carried by its respective network's one or more communication signals between its respective network and one or more of the plurality of terminals.
24. The communications system of claim 23, wherein the plurality of airplanes include a first airplane and a second airplane, each airplane being located in a station outside of the beamwidths of the communication signals between the terminals and communication devices in other airplanes.
25. The communications system of claim 24, wherein the first airplane and the second airplane each include communications devices that are configured to communicate with one or more of the same communication cells.
26. The communications system of claim 23, wherein each airplane is configured to stay aloft without refueling for at least 200 hours.
27. The communications system of claim 23, wherein each airplane is configured to stay aloft without refueling for at least 3000 hours.
28. The communications system of claim 23, wherein each terminal has a terminal antenna is configured such that the airplane's entire station falls within the terminal antenna's beamwidth without any adjustment of the terminal antenna's aim.
29. The communications system of claim 28, wherein the terminal antenna includes no active tracking mechanism.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US19605800P | 2000-04-10 | 2000-04-10 | |
| US60/196,058 | 2000-04-10 | ||
| PCT/US2001/011634 WO2001078257A2 (en) | 2000-04-10 | 2001-04-10 | Communications system with suborbital platform carrying a communication device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2403280A1 true CA2403280A1 (en) | 2001-10-18 |
| CA2403280C CA2403280C (en) | 2011-07-12 |
Family
ID=22723969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2403280A Expired - Fee Related CA2403280C (en) | 2000-04-10 | 2001-04-10 | Suborbital communications system |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US6944450B2 (en) |
| EP (1) | EP1352486A2 (en) |
| JP (1) | JP4722367B2 (en) |
| KR (2) | KR100878646B1 (en) |
| CN (1) | CN1440599A (en) |
| AU (1) | AU2001249960A1 (en) |
| BR (1) | BR0110291A (en) |
| CA (1) | CA2403280C (en) |
| MX (1) | MXPA02009652A (en) |
| RU (1) | RU2002129590A (en) |
| WO (1) | WO2001078257A2 (en) |
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-
2001
- 2001-04-10 JP JP2001575003A patent/JP4722367B2/en not_active Expired - Fee Related
- 2001-04-10 EP EP01923249A patent/EP1352486A2/en not_active Withdrawn
- 2001-04-10 MX MXPA02009652A patent/MXPA02009652A/en unknown
- 2001-04-10 RU RU2002129590/09A patent/RU2002129590A/en not_active Application Discontinuation
- 2001-04-10 US US09/832,328 patent/US6944450B2/en not_active Expired - Lifetime
- 2001-04-10 CN CN01807825A patent/CN1440599A/en active Pending
- 2001-04-10 KR KR1020087002615A patent/KR100878646B1/en not_active IP Right Cessation
- 2001-04-10 KR KR1020027013483A patent/KR100878644B1/en not_active IP Right Cessation
- 2001-04-10 WO PCT/US2001/011634 patent/WO2001078257A2/en not_active Application Discontinuation
- 2001-04-10 CA CA2403280A patent/CA2403280C/en not_active Expired - Fee Related
- 2001-04-10 BR BR0110291-5A patent/BR0110291A/en not_active Application Discontinuation
- 2001-04-10 AU AU2001249960A patent/AU2001249960A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| KR20030093904A (en) | 2003-12-11 |
| KR100878644B1 (en) | 2009-01-15 |
| KR20080017495A (en) | 2008-02-26 |
| WO2001078257A2 (en) | 2001-10-18 |
| KR100878646B1 (en) | 2009-01-15 |
| AU2001249960A1 (en) | 2001-10-23 |
| JP4722367B2 (en) | 2011-07-13 |
| BR0110291A (en) | 2004-02-10 |
| WO2001078257A3 (en) | 2003-08-07 |
| EP1352486A2 (en) | 2003-10-15 |
| US20010039189A1 (en) | 2001-11-08 |
| RU2002129590A (en) | 2004-03-10 |
| JP2004500786A (en) | 2004-01-08 |
| US6944450B2 (en) | 2005-09-13 |
| CN1440599A (en) | 2003-09-03 |
| MXPA02009652A (en) | 2004-05-17 |
| CA2403280C (en) | 2011-07-12 |
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