Wireless spread spectrum ground link-based aircraft data communication system with approach data messaging download

• US 6,160,998 A
• Filed: 06/25/1999
• Issued: 12/12/2000
• Est. Priority Date: 06/25/1999
• Status: Expired due to Term

• Current Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Wright, Thomas H., Salati, Bruce D.
• Primary Examiner(s): Crosland, Donnie L.
• Application Number:
  US09/344,651
• Time in Patent Office: 536 Days
• Field of Search: 455/66, 455/73, 455/67.1, 455/431, 340/945, 340/961, 340/971, 340/825.15, 340/825.16, 340/825.69, 340/825.72, 375/200, 375/219, 375/220, 701/3, 701/13, 701/14, 701/29, 701/35, 342/33, 342/34, 342/36
• US Class Current: 455/66.1
• CPC Class Codes: H04B 7/18506 Communications with or from aircraft, i.e. aeronautical mobile service

Abstract

A system and method of the present invention provides a retrievable record of the flight performance of an aircraft and allows exchanging of data to and from an aircraft. A ground data link unit obtains flight performance data. A spread spectrum transceiver is coupled to an archival data store that has accumulated and stored the flight performance data. The spread spectrum transceiver downloads both the flight performance data and data messages over the spread spectrum communication signal as the aircraft approaches the destination airport and after the aircraft completes its flight and lands at the airport. An airport based spread spectrum transceiver receives the spread spectrum communication signal and demodulates the signal to obtain the data messages and flight performance data. A ground based processor coupled to the airport based spread spectrum transceiver receives at least the data message for subsequent processing.

Claims

1. A system for providing a retrievable record of the flight performance of an aircraft comprising:

a ground data link unit that obtains flight performance data representative of aircraft flight performance during flight of the aircraft and generates data messages to be downloaded, said ground data link unit comprising;

a) an archival data store operative to accumulate and store flight performance data during flight of the aircraft and any data messages to be downloaded from the aircraft as the aircraft approaches a destination airport, and

b) a spread spectrum transceiver coupled to said archival data store, and comprising a transmitter that is operative to download the data messages over a spread spectrum communication signal as the aircraft approaches in proximity to a destination airport, and operative after the aircraft completes its flight and lands at an airport to download the flight performance data that has been accumulated and stored by said archival data store during flight over the spread spectrum communication signal;

an airport based spread spectrum transceiver comprising a receiver that receives the spread spectrum communication signal from the aircraft and demodulates the signal to obtain the data messages and flight performance data; and

a ground based processor coupled to said airport based spread spectrum transceiver for receiving at least the data messages for subsequent processing.

2. A system according to claim 1, wherein said data messages comprise a record of the fuel weight during landing for subsequent calculation of the fuel requirements of the next flight.

3. A system according to claim 1, wherein said data messages comprise a record of the en route weather data that occurs during flight of the aircraft.

4. A system according to claim 1, and further comprising an airport based archival data store coupled to said airport based spread spectrum transceiver that receives and stores said flight performance data, wherein said ground based processor is operatively connected to said archival data store for retrieving flight performance data from said airport based archival data store.

5. A system according to claim 4, wherein said airport based spread spectrum transceiver further comprises a wireless router that couples said spread spectrum transceiver to said airport based archival data store.

6. A system according to claim 1, and further comprising a ground based server coupled to said ground based processor that receives said data messages.

7. A system according to claim 6, and further comprising a remote flight operations control center operatively coupled to said ground based server for receiving and processing the data messages.

8. A system according to claim 1, wherein the spread spectrum communication signal comprises a direct sequence spread spectrum communication signal.

9. A system according to claim 1, wherein the spread spectrum communication signal comprises a signal within the S band.

10. A system according to claim 1, wherein the spread spectrum communication signal comprises a signal in the range of about 2.4 to about 2.5 GHz.

11. A system for exchanging information to and from an aircraft comprising:

a ground data link unit that obtains flight performance data representative of aircraft flight performance during flight of the aircraft and generates data messages to be downloaded, said ground data link unit comprising;

a) an archival data store operative to accumulate and store flight performance data during flight of the aircraft and any data messages to be downloaded from the aircraft as the aircraft approaches a destination airport, and

b) a spread spectrum transceiver coupled to said archival data store, and comprising a transmitter that is operative to download the data messages over a spread spectrum communication signal as the aircraft approaches in proximity to a destination airport, and operative after the aircraft completes its flight and lands at an airport to download the flight performance data that has been accumulated and stored by said archival data store during flight over the spread spectrum communication signal, and a receiver for receiving uploaded data messages over a second spread spectrum communication signal as the aircraft approaches the destination airport;

an airport based spread spectrum transceiver comprising a receiver that receives the spread spectrum communication signal from the aircraft and demodulates the signal to obtain the data messages and flight performance data, and a transmitter that transmits data for uploading to the aircraft as the aircraft approaches the destination airport; and

a ground based processor coupled to said airport based spread spectrum transceiver for receiving at least the data messages for subsequent processing.

12. A system according to claim 11, wherein said data messages comprise a record of the fuel weight during landing for subsequent calculation of the fuel requirements of the next flight.

13. A system according to claim 11, wherein said data messages comprise a record of the en route weather data that occurs during flight of the aircraft.

14. A system according to claim 11, wherein said uploaded data messages comprise gate assignment information.

15. A system according to claim 11, wherein said uploaded data messages comprise Digital Automatic Terminal Information.

16. A system according to claim 11, and further comprising an airport based archival data store coupled to said airport based spread spectrum transceiver that receives and stores said flight performance data, wherein said ground based processor is operatively connected to said archival data store for retrieving flight performance data from said airport based archival data store.

17. A system according to claim 11, wherein said airport based spread spectrum transceiver further comprises a wireless router that couples said spread spectrum transceiver to said airport based archival data store.

18. A system according to claim 11, and further comprising a ground based server coupled to ground airport based processor that receives said data messages.

19. A system according to claim 18, and further comprising a remote flight operations control center operatively coupled to said ground based server for receiving and processing the data messages.

20. A system according to claim 11, wherein the spread spectrum communication signal comprises a direct sequence spread spectrum communication signal.

21. A system according to claim 11, wherein the spread spectrum communication signal comprises a signal within the S band.

22. A system according to claim 11, wherein the spread spectrum communication signal comprises a signal in the range of about 2.4 to about 2.5 GHz.

23. A method of providing a retrievable record of the flight performance of an aircraft comprising the steps of:

acquiring flight performance data of an aircraft during flight of the aircraft;

accumulating and storing within an archival data store of a ground data link unit the flight performance data during flight of the aircraft;

generating data messages to be downloaded upon initial approach of the aircraft in proximity to an airport;

downloading the data messages over a spread spectrum communication signal as the aircraft approaches in proximity to a destination airport to an airport based spread spectrum transceiver;

after the aircraft lands at an airport at completion of the flight, downloading the flight performance data that has been accumulated and stored within the archival data store during the flight over a spread spectrum communication signal to the airport based spread spectrum receiver;

demodulating the received spread spectrum signals to obtain the data messages and flight performance data; and

forwarding the data messages to a ground based processor for further processing.

24. A method according to claim 23, and further comprising the step of maintaining a record of the fuel weight upon arrival in proximity to the destination airport and transmitting a data message of the fuel weight from said ground data link unit.

25. A method according to claim 23, and further comprising the step of maintaining a record of the en route weather data during flight of the aircraft and transmitting data message of the weather from said ground data link unit.

26. A method according to claim 23, and further comprising the step of receiving and storing the data messages within an airport based archival data store.

27. A method according to claim 23, and further comprising the step of routing the data messages over a wireless router from the spread spectrum transceiver to the airport based processor.

28. A method according to claim 23, and further comprising the step of routing the data messages from the ground based processor to a ground based server.

29. A method according to claim 23, wherein the wideband spread spectrum communication signal comprises a direct sequence spread spectrum signal.

30. A method according to claim 23, wherein the wideband spread spectrum communication signal comprises a signal within the S band.

31. A method according to claim 23, wherein the wideband spread spectrum communication signal comprises a signal within a range of about 2.4 to about 2.5 GHz.

32. A method of exchanging data to and from an aircraft comprising the steps of:

acquiring flight performance data of an aircraft during flight of the aircraft;

accumulating and storing within an archival data store of a ground data link unit the flight performance data during flight of the aircraft;

generating data messages to be downloaded upon initial approach of the aircraft in proximity to a destination airport;

downloading the data messages over a spread spectrum communication signal as the aircraft approaches in proximity to a destination airport to an airport based spread spectrum transceiver;

uploading data messages over a second spread spectrum communication signal as the aircraft approaches the destination airport from the destination airport based spread spectrum transceiver;

after the aircraft lands at the destination airport at completion of the flight, downloading the flight performance data that has been accumulated and stored within the archival data store during the flight over a spread spectrum communication signal to the airport based spread spectrum transceiver;

demodulating the received spread spectrum signals to obtain the data messages and flight performance data;

forwarding the data messages to a ground based processor for further processing.

33. A method according to claim 32, and further comprising the step of maintaining a record of the fuel weight upon arrival at the destination airport and transmitting a data message of the fuel weight from said ground data link unit.

34. A method according to claim 32, and further comprising the step of maintaining a record of the en route weather data during flight of the aircraft and transmitting a data message of the weather from the ground data link unit.

35. A method according to claim 32, and further comprising the step of uploading data messages containing gate assignment information.

36. A method according to claim 32, and further comprising the step of uploading data messages containing Digital Automatic Terminal Information.

37. A method according to claim 32, and further comprising the step of receiving and storing the flight performance data within an airport based archival data store.

38. A method according to claim 32, and further comprising the step of routing the data messages over a wireless router from the spread spectrum transceiver to the airport based processor.

39. A method according to claim 32, and further comprising the step of routing the data messages from the ground based processor to a ground based server.

40. A method according to claim 32, wherein the wideband spread spectrum communication signal comprises a direct sequence spread spectrum signal.

41. A method according to claim 32, wherein the wideband spread spectrum communication signal comprises a signal within the S band.

42. A method according to claim 32, wherein the wideband spread spectrum communication signal comprises a signal within a range of about 2.4 to about 2.5 GHz.