Transmission of Information to a System Utilizing a GPS Device

• US 20080284647A1
• Filed: 02/08/2008
• Published: 11/20/2008
• Est. Priority Date: 02/09/2007
• Status: Abandoned Application

• Current Assignee: Corning Optical Communications Wireless Ltd. (Corning Incorporated)
• Original Assignee: Corning Optical Communications Wireless Ltd. (Corning Incorporated)
• Inventors: Oren, Yair, Alterman, Stanley B.
• Application Number:
  US12/028,201
• Publication Number:
  US 20080284647A1
• Time in Patent Office: Days
• US Class Current: 342/357.09
• CPC Class Codes: G01S 19/03 Cooperating elements; Interaction or communication between different cooperating elements or between cooperating elements and receivers
• CPC Class Codes: G01S 19/18 Military applications
• CPC Class Codes: H04B 1/707 using direct sequence modulation

Abstract

A system for transmitting non-GPS information for reception by a global positioning system (GPS) receiver, the system including a processor, a memory coupled to the processor and including computer-readable instructions configured to, when executed by the processor, cause the processor to receive the non-GPS information, determine an available pseudo-random noise (PRN) code, spread the non-GPS information using the available PRN code to provide a spread signal, modulate a GPS carrier frequency using the spread signal to produce a GPS compatible signal, and a terrestrial transmitter configured to transmit the GPS compatible signal.

Claims

1. A system for transmitting non-GPS information for reception by a global positioning system (GPS) receiver, the system comprising:

a PRN code selector adapted to select one or more predefined pseudo-random noise (PRN) codes from a set of PRN codes used to transmit GPS signals;

a GPS transmitter adapted to receive the non-GPS information and produce a GPS compatible signal containing the non-GPS information according to one or more of the selected PRN codes; and

wherein the non-GPS information includes information adapted to interpreted by an intended receiving device.

2. The system according to claim 1 wherein GPS-compatible signal uses at least one carrier frequency from L1, L2, and L5 carrier frequencies.

3. The system according to claim 1 wherein the PRN code selector is adapted to select a PRN code from a set of PRN codes corresponding to one or more GPS satellites that are out of view of the intended receiving device.

4. The system according to claim 1 wherein the PRN code selector is adapted to select a PRN code from a set of unused PRN codes.

5. The system according to claim 1 wherein the PRN code selector is adapted to select a PRN code from a set of PRN codes corresponding to one or more GPS satellites.

6. The system according to claim 5 wherein the GPS transmitter transmits the GPS-compatible signal at a higher power than the corresponding GPS satellite associated with the selected PRN code.

7. The system according to claim 5 wherein the GPS transmitter transmits the GPS-compatible signal at a lower duty cycle than the corresponding GPS satellite associated with the selected PRN code.

8. The system according to claim 7 wherein the GPS transmitter transmits the GPS-compatible signal at a duty cycle that is 10%-30% of the duty cycle of the corresponding GPS satellite associated with the selected PRN codes.

9. The system according to claim 1 wherein the non-GPS information includes control information adapted to control operation of the intended receiving device.

10. The system according to claim 9 wherein the control information is adapted to cause the intended receiving device to self destruct.

11. The system according to claim 9 wherein the intended receiving device is moving and the control information is adapted to cause the intended receiving device to change speed.

12. The system according to claim 9 wherein the intended receiving device is moving and the control information is adapted to cause the intended receiving device to change direction.

13. The system according to claim 9 wherein the intended receiving device is moving and the control information is adapted to cause the intended receiving device to change destination.

14. The system according to claim 1 wherein the non-GPS information includes coordinate information indicative of a location.

15. The system according to claim 14 wherein the intended receiving device is moving and the non-GPS information includes coordinate information indicative of a destination of the intended receiving device.

16. The system according to claim 1 wherein the non-GPS information includes coordinate information indicative of a deviation from location.

17. The system according to claim 1 wherein the non-GPS information includes a covert communication to the intended receiving device.

18. The system according to claim 17, wherein the covert communication is encrypted.

19. The system according to claim 1 wherein the PRN selector selects two or more PRN codes and the GPS transmitter transmits the non-GPS information using two or more PRN codes.

20. The system according to claim 19 wherein the GPS transmitter transmits the non-GPS information to two or more intended receiving devices.

21. The system according to claim 19 wherein the non-GPS information includes two or more separate messages, each message intended for a specific one of two or more intended receiving devices and the GPS transmitter transmits each message in a GPS-compatible signal using a different one of the selected PRN codes.

22. A method for transmitting non-GPS information to a global positioning system (GPS) receiver, the system comprising:

selecting one or more predefined pseudo-random noise (PRN) codes from a set of PRN codes used to transmit GPS signals;

receiving by a GPS transmitter, the non-GPS information; and

transmitting a GPS compatible signal containing the non-GPS information according to one or more of the selected PRN codes;

wherein the non-GPS information includes information adapted to interpreted by an intended receiving device.

23. The method according to claim 22 wherein at least one PRN code is selected from a set of PRN codes corresponding to one or more GPS satellites that are out of view of the intended receiving device.

24. The method according to claim 22 wherein at least one PRN code is selected from a set of unused PRN codes.

25. The system according to claim 22 wherein at least one PRN code is selected from a set of PRN codes corresponding to a GPS satellites.

26. The method according to claim 25 further comprising transmitting the GPS-compatible signal at a higher power than the corresponding GPS satellite for the selected PRN code.

37. The method according to claim 25 further comprising transmitting the GPS-compatible signal at a lower duty cycle than the corresponding GPS satellite for the selected PRN code.

39. The method according to claim 22 further comprising receiving the GPS-compatible signal by a receiving device;

and

controlling an operation of the intended receiving device as a function of the non-GPS information.

40. The method according to claim 39 the operation includes causing the intended receiving device to self destruct.

41. The method according to claim 39 wherein the intended receiving device is moving and the operation includes causing the intended receiving device to change speed.

42. The method according to claim 39 wherein the intended receiving device is moving and the operation includes causing the intended receiving device to change direction.

43. The method according to claim 39 wherein the intended receiving device is moving and the operation includes causing the intended receiving device to change destination.

44. The method according to claim 22 further comprising selecting at least two PRN codes and transmitting the non-GPS information using two GPS-compatible signals, each signal using a different one of the at least two selected PRN codes.

45. The method according to claim 44 further comprising receiving the non-GPS information to two or more intended receiving devices.

46. The method according to claim 44 wherein the non-GPS information includes two or more separate messages, each message intended for a specific one of two or more intended receiving devices and the method includes transmitting each message in a GPS-compatible signal using a different one of the at least two selected PRN codes.

38. The method according to claim 27 wherein the duty cycle is 10%-30% of the duty cycle of the corresponding GPS satellite for the selected PRN code.