Towed network communications subsystem for in flight use by towing aircraft

• US 8,358,967 B1
• Filed: 12/01/2008
• Issued: 01/22/2013
• Est. Priority Date: 12/01/2008
• Status: Expired due to Fees

• Current Assignee: L-3 Communications Corporation (L3Harris Technologies, Inc.)
• Original Assignee: L-3 Communications Corporation (L3Harris Technologies, Inc.)
• Inventors: Giallorenzi, Thomas R., Rebolledo, Robert G., Hanewinkel, William Henry III, Cherry, Paul C.
• Primary Examiner(s): DEAN, RAYMOND S
• Application Number:
  US12/325,942
• Time in Patent Office: 1,513 Days
• Field of Search: 455/67.11, 455/11.1, 342/9, 342/14, 342/173, 244/3.1, 244/3.12, 244/3.14
• US Class Current: 455/11.1
• CPC Class Codes: H04B 7/18504 Aircraft used as relay or high altitude atmospheric platform
• CPC Class Codes: H04B 7/18506 Communications with or from aircraft, i.e. aeronautical mobile service

Abstract

The present invention relates to a towed wireless network communications subsystem for use in flight by a towing aircraft. The towed wireless network communications subsystem includes an aerodynamic enclosure having a tether attachment and configured to be towed by the towing aircraft. A directional antenna is disposed on the aerodynamic enclosure and is capable of forming one or more directional communications beams within a wireless network. A communications device is disposed in the aerodynamic enclosure and is coupled to the directional antenna(s). The communications device is configured to relay communications data between the towing aircraft and the wireless network.

Claims

1. A towed wireless network communications subsystem for in flight use by a towing aircraft comprising:

an aerodynamic enclosure having a tether attachment and configured to be towed by the towing aircraft;

a directional antenna coupled to the aerodynamic enclosure and capable of forming a directional communications beam within a wireless communications network, wherein the antenna has a near full-field-of-regard; and

a communications device disposed in the aerodynamic enclosure, coupled to the directional antenna and configured to relay communications data between the towing aircraft and the wireless network.

2. The subsystem of claim 1, wherein the directional antenna is a plurality of directional antennas.

3. The subsystem of claim 1, wherein the directional antenna is a mechanically-steered, directional antenna.

4. The subsystem of claim 1, further comprising a tether coupled to the tether attachment, wherein the tether comprises:

a flexible strength member; and

a flexible signal communications member.

5. The subsystem of claim 1, further comprising:

a flight control surface disposed on the aerodynamic enclosure; and

an attitude control system coupled to the inertial navigation unit and to a flight control surface.

6. The subsystem of claim 1, further comprising an electronic beam steering system coupled to the inertial navigation unit and to the directional antenna.

7. The subsystem of claim 1, wherein an inertial navigation unit is coupled to the directional antenna, and wherein the directional antenna is capable of mechanical steering.

8. The subsystem of claim 1, wherein the communications device comprises a wireless transceiver for wirelessly communicating with the towing aircraft.

9. The subsystem of claim 1, further comprising a power source coupled to the aerodynamic enclosure.

24. The subsystem of claim 1, wherein the directional antenna is an individual antenna.

25. The subsystem of claim 1, wherein:

the communications network is a data communications network, and

the directional communications beam is a data communications beam.

10. A communications system providing near full-field-of-regard comprising:

an aircraft;

an aerodynamic enclosure comprising a wireless network communications device disposed therein, the wireless network communications device comprising a means for forming a directional communications link within a wireless network, wherein the means for forming the directional communications link provides a near full-field-of-regard; and

a tether connecting the aerodynamic enclosure to the aircraft for towing the aerodynamic enclosure behind the aircraft during flight.

11. The system of claim 10, where in the wireless network communications device comprises a plurality of means for forming directional communications links within a wireless network.

12. The system of claim 10, wherein the means for forming a directional communications link has at least a 99.9% field of regard when in a deployed position.

13. The system of claim 10, wherein the means for forming a directional communications link has at least a 99.99% field of regard when in a deployed position.

26. The subsystem of claim 10, wherein the direction communications link is a data communications link.

14. A method of providing an aircraft with a near full-field-of-regard wireless network communications capability, the method comprising:

providing a directional antenna disposed on an aerodynamic towable pod, the directional antenna being capable of forming a directional communications beam within a wireless network; and

towing the aerodynamic towable pod behind the aircraft with a tether at a sufficient distance to provide the directional antenna with near full-field-of-regard; and

forming a communications link between the directional antenna and a wireless network.

15. The method of claim 14, wherein the field of regard comprises 99.9% of a sphere.

16. The method of claim 14, wherein the field of regard comprises 99.99% of a sphere.

17. The method of claim 14, further comprising communicating data from the communications link to the aircraft.

18. The method of claim 14, further comprising steering the pod using flight control surfaces disposed on the pod.

19. The method of claim 14, further comprising electronically stabilizing the directional antenna.

20. The method of claim 14, further comprising stabilizing the directional antenna using an inertial navigation unit disposed on the pod.

21. The method of claim 14, further comprising:

towing a plurality of aerodynamic towable pods behind an aircraft on a tether; and

combining wireless network signals communicated via each of the plurality of aerodynamic towable pods to obtain a diversity gain.

22. The method of claim 14, further comprising radiating electronic countermeasure signals from the aerodynamic towable pod.

23. The method of claim 14, further comprising performing signal intelligence gathering at the aerodynamic towable pod.

27. The method of claim 14, wherein the directional antenna is an individual antenna.

28. The method of claim 14, wherein the communications link is a data communications link.