Soft kill laser configuration for ground vehicle threats

Patent metadata

Field	Value
Publication number	US-11248879-B1
Application number	US-202016916251-A
Country	US
Kind code	B1
Filing date	Jun 30, 2020
Priority date	Jun 30, 2020
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A laser mast for attachment to a ground vehicle includes a mast, a rotary stage, a platform, a first laser, and a second laser. The rotary stage is connected to and rotates the mast. The platform is connected to the rotary stage. The first laser is within the mast. The second laser is within the rotary stage or the platform.

First claim

The invention claimed is:

1. A method for diverting an incoming threat from a platform, the method comprising: detecting an incoming threat; in response to detecting the incoming treat, determining a first angle of arrival of the incoming threat; emitting a first laser beam from a first laser source located substantially within a laser mast connected to the platform, wherein the first laser beam is emitted from a first aperture of the laser mast at the first determined angle of arrival; emitting a second laser beam from a second laser source from the laser mast, wherein the second laser beam is emitted from a second aperture of the laser mast at the first determined angle of arrival; reflecting at a first mirror the first laser beam at a first angle; reflecting at a second mirror the second laser beam at a second angle; altering a trajectory of the incoming threat using the first laser beam; and preventing a guidance system of a launcher that fired the incoming threat from altering the trajectory of the incoming threat using the second laser beam; wherein the first laser beam has a greater irradiance than the second laser beam.

2. The method of claim 1 , wherein the first laser beam causes the guidance system of the incoming threat to alter the trajectory of the incoming threat towards the second laser beam.

3. The method of claim 2 , further comprising:
emitting the first laser toward a ground location a distance away from the platform.

4. The method of claim 3 , wherein the platform is a ground vehicle and the distance away from the ground vehicle is determined as a function of a type of the ground vehicle.

5. The method of claim 1 , wherein the first laser beam has a first irradiance and the second laser beam has a second irradiance.

6. The method of claim 1 , further comprising:
rotating the laser mast to the first determined angle of arrival; and
in response to rotating the laser mast to the first determined angle of arrival, emitting the first laser beam and the second laser beam at the first determined angle of arrival.

7. The method of claim 1 , further comprising:
determining a second angle of arrival of the incoming threat;
rotating the laser mast to the second determined angle of arrival; and
emitting the first laser beam and the second laser beam at the second determined angle of arrival.

8. The method of claim 1 , wherein the second laser beam is emitted towards a launcher that fired the incoming threat.

9. A laser mast for attachment to a platform comprising: a mast including a first aperture and a second aperture; a rotary stage connected to the mast, wherein the rotary stage is configured to rotate the mast; a platform connected to the rotary stage; a first laser source that is substantially within the mast; and a second laser source that is proximate the rotary stage or the platform; wherein the first laser source emits a first laser beam that exits the mast at the first aperture and the second laser source emits a second laser beam that exits the mast at the second aperture; and a first mirror reflects the first laser beam at a first angle and a second mirror configured to reflect the second laser beam at a second angle; wherein the first laser beam has a greater irradiance than the second laser beam such that the first laser beam is capable of causing a guidance system of an incoming threat to alter a trajectory of the incoming threat and the second laser beam is capable of preventing the guidance system of a launcher that fired the incoming threat from altering the trajectory of the incoming threat.

10. The laser mast of claim 9 , wherein the first angle is approximately an angle of the incoming threat.

11. The laser mast of claim 10 , wherein the rotary stage is configured to rotate the laser mast to the angle of the incoming threat.

12. The laser mast of claim 9 , wherein the second angle is approximately an angle of the launcher.

13. The laser mast of claim 12 , wherein the rotary stage is configured to rotate the laser mast to the angle of the launcher.

14. The laser mast of claim 9 , wherein when the laser mast is attached to the platform, and wherein the first laser source is vertically above the second laser source.

15. The laser mast of claim 9 , wherein the first laser source is substantially within the mast and the second laser source is substantially within or below the rotary stage or substantially within the platform.

16. The laser mast of claim 9 , wherein when the laser mast is attached to the platform, the first aperture is vertically below the second aperture.

17. The laser mast of claim 9 , further comprising: the first mirror within the mast, wherein the first mirror is fixedly attached to the mast and wherein the first mirror reflects the first laser beam; and the second mirror within the mast, wherein the second mirror is rotatably attached to a pivot and wherein the second mirror reflects the second laser beam.

18. The laser mast of claim 9 , wherein the first laser beam has a first irradiance and the second laser beam has a second irradiance.

Assignees

• Bae Sys Inf & Elect Sys Integ
• Bae Systems Information And Electronic System Integration Inc

Inventors

• Barfoot David A
• Easton Jeffrey
• Herb Karl P
• Kepler Matthew F
• Mathur Somit S
• Shaw Michael W

Classifications

• G02B26/106

  having diffraction gratings as scanning elements, e.g. holographic scanners (holographic optical elements G02B5/32, holography G03H) · CPC title

• F41H13/0056

  for blinding or dazzling, i.e. by overstimulating the opponent's eyes or the enemy's sensor equipment · CPC title

• F41H11/02 Primary

  Anti-aircraft or anti-guided missile {or anti-torpedo} defence installations or systems (cartridges or missiles for producing smoke or for dispensing radar chaff or infrared material F42B5/15, F42B12/48, F42B12/70; {informative reference: details of radar or sonar systems G01S7/00; jamming or electronic countermeasures G01S7/38, G01S7/495, H04K3/00}) · CPC title

• F41G7/224

  Deceiving or protecting means (jamming or anti-jamming of radio-wave systems in general G01S7/36, G01S7/38; defense installations in general F41H11/02; chaff dispensers F42B12/70) · CPC title

• G02B26/0816

  by means of one or more reflecting elements · CPC title