Scene illuminator

• US 8,581,771 B2
• Filed: 05/12/2010
• Issued: 11/12/2013
• Est. Priority Date: 07/28/2009
• Status: Active Grant

• Current Assignee: the united states of america as represented by the secretary of the navy
• Original Assignee: the united states of america as represented by the secretary of the navy
• Inventors: Bradley, Timothy
• Primary Examiner(s): GREGORY, BERNARR E
• Application Number:
  US12/778,892
• Publication Number:
  US 20120098693A1
• Time in Patent Office: 1,280 Days
• Field of Search: 455/1, 398/39, 398/140, 398168-172, 342 13- 20, 342 29- 51, 244 31- 319, 726/2, 726 16- 21, 726 26- 30, 89/11.1, 372/109
• US Class Current: 342/14
• CPC Class Codes: F41H 13/005 the high-energy beam being a laser beam
• CPC Class Codes: F41H 13/0062 causing structural damage to the target
• CPC Class Codes: G06F 21/6209 to a single file or object, e.g. in a secure envelope, encrypted and accessed using a key, or with access control rules appended to the object itself
• CPC Class Codes: G06F 2221/2101 Auditing as a secondary aspect
• CPC Class Codes: G06F 2221/2141 Access rights, e.g. capability lists, access control lists, access tables, access matrices
• CPC Class Codes: G06F 2221/2149 Restricted operating environment
• CPC Class Codes: H04K 3/80 Jamming or countermeasure characterized by its function

Abstract

A system is disclosed to identify authorized EO devices and unauthorized EO devices within a scene. The system hampers the operation of the unauthorized EO devices detected within the scene.

Claims

1. A method of hampering unauthorized electro-optic devices, the method comprising the steps of:

interrogating an area with optical energy from at least one optical source;

receiving a reflection from a first electro-optic device;

storing data representative of optically detectable characteristics for a plurality of authorized electro-optic devices;

comparing an optically detectable characteristic of the received reflection of the first electro-optic device to the stored data representative of optically detectable characteristics of authorized electro-optic devices to determine if the first electro-optic device is one of said authorized devices; and

if the first electro-optic device is not one of said authorized devices, hampering the operation of the first electro-optic device.

2. The method of claim 1, wherein the at least one optical source is at least one continuous wave laser source having a wavelength of at least 1.5 microns.

3. The method of claim 1, wherein the comparing step of includes the steps of:

determining a Fourier transform of the received reflection from the first electro-optic device; and

comparing at least a portion of the Fourier transform to the stored optically detectable characteristics to determine if the portion of the Fourier transform matches the stored optically detectable characteristics.

4. The method of claim 1, wherein the first electro-optic device is an unauthorized electro-optic device, the step of hampering the operation of the first electro-optic device includes the steps of:

increasing a power level of the optical energy from the at least one optical source;

directing the optical energy with the increased power at the first electro-optic device.

5. The method of claim 4, wherein the first electro-optic device is an infrared tracking device having a seeker head traveling in a first direction towards the at least one optical source, the optical energy with the increased power level being directed into the seeker head of the infrared tracking device to generate at least one localized source within the mobile tracking device and within a field of view of the infrared tracking device which indicates a second direction of travel for the infrared tracking device.

6. The method of claim 5, further comprising the steps of:

altering the direction of the optical energy with the increased power level such that the optical energy with the increased power level continues to be directed at the seeker head of the infrared tracking device which is traveling in the second direction and continues to generate at least one localized source within the infrared tracking device and within the field of view of the infrared tracking device which indicates a third direction of travel for the infrared tracking device.

7. The method of claim 1, wherein the step of hampering the operation of the first electro-optic device includes the step of blinding the first electro-optic device with optical energy.

8. The method of claim 1, wherein the step of hampering the operation of the first electro-optic device includes the step of jamming an operation of the first electro-optic device with optical energy.

9. The method of claim 1, wherein the step of hampering the operation of the first electro-optic device includes the step of permanently disabling an operation of the first electro- optic device with optical energy.

10. The method of claim 1, wherein the step of hampering the operation of the first electro-optic device includes the step of destroying the first electro-optic device with optical energy.

11. The method of claim 1, wherein the step of hampering the operation of the first electro-optic device includes the step of sending out high power optical energy in a direction towards the first electro-optic device and the method further comprising the steps of:

prior to sending out high power optical energy in a direction towards the first electro-optic device, broadcasting a signal which when received by an authorized electro-optic device causes the authorized electro-optic device to protect its sensors from the high power optical energy.

12. The method of claim 11, wherein the authorized electro-optic device shields its sensors from the high power optical energy.

13. An apparatus for interacting with an electro-optic device, the apparatus comprising:

a body;

at least one propulsion device supported by the body;

a privacy device which monitors the environment surrounding the body for an unauthorized electro-optic device;

a controller operatively connected to the privacy device, the controller determining a presence of the unauthorized electro-optic device in the environment surrounding the body based on information collected by the privacy device and a current location of the unauthorized electro-optic device; and

a modulation system which receives the current location of the unauthorized electro-optic device from the controller, orients a tracking system of the modulation system based on the current location of the unauthorized electro-optic device, detects the unauthorized electro-optic device, updates the location of the unauthorized electro-optic device, and directs a continuous beam of optical energy at the unauthorized electro-optic device.

14. The apparatus of claim 13, wherein the continuous beam of optical energy being produced by a plurality of semiconductor lasers whose output are combined.

15. The apparatus of claim 13, wherein the plurality of semiconductor lasers are quantum cascade lasers.

16. The apparatus of claim 13, wherein the output of each of the plurality of semiconductor lasers are incoherently combined to produce the continuous beam of optical energy.

17. The apparatus of claim 13, wherein the controller continues to update the current location of the unauthorized electro-optic device until the modulation system detects the unauthorized electro-optic device, the modulation system using the updated current location to orient the tracking system.