Geolocation of magnetic sources using vector magnetometer sensors

• US 10,371,765 B2
• Filed: 02/20/2017
• Issued: 08/06/2019
• Est. Priority Date: 07/11/2016
• Status: Active Grant

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Kaup, Peter G., Manickam, Arul, Stetson, John B.
• Primary Examiner(s): Vargas, Dixomara
• Application Number:
  US15/437,222
• Publication Number:
  US 20180011152A1
• Time in Patent Office: 897 Days
• CPC Class Codes: G01C 21/20 Instruments for performing navigational calculations G01C21/24, G01C21/26 take precedence
• CPC Class Codes: G01N 24/12 by using double resonance
• CPC Class Codes: G01R 33/26 using optical pumping
• CPC Class Codes: G01R 33/323 Detection of MR without the use of RF or microwaves, e.g. force-detected MR, thermally detected MR, MR detection via electrical conductivity, optically detected MR

Abstract

System and methods for determining an angle and/or geolocation of a dipole magnetic source relative to one or more DNV sensors. The system may include one or more DNV sensors, and a controller. The controller is configured to activate the DNV sensors, receive a set of vector measurements from the DNV sensors, and determine an angle of a magnetic source relative to the one or more DNV sensors based on the received set of vector measurements from the DNV sensors.

Claims

1. A system comprising:

one or more diamond nitrogen vacancy (DNV) sensors; and

a controller configured to;

activate the DNV sensors,

receive a set of vector measurements from the DNV sensors, and

determine an angle of a magnetic source relative to the one or more DNV sensors based on the received set of vector measurements from the DNV sensors.

2. The system of claim 1, wherein the magnetic source is a rotating magnetic source.

3. The system of claim 1, wherein the controller is further configured to determine the position and dipole moment of the magnetic source based on the received set of vector measurements from the DNV sensors.

4. The system of claim 3, wherein the angle of the magnetic source relative to the one or more DNV sensors is determined based in part on the determined position and dipole moment of the magnetic source.

5. The system of claim 1, wherein the number of DNV sensors is three or more.

6. A system comprising:

one or more diamond nitrogen vacancy (DNV) sensors; and

a controller configured to;

activate the DNV sensors,

receive a set of vector measurements from the DNV sensors, and

determine geolocation of a magnetic source relative to the one or more DNV sensors based on the received set of vector measurements from the DNV sensors.

7. The system of claim 6, wherein the controller is further configured to determine the position and dipole moment of the magnetic source based on the received set of vector measurements from the DNV sensors.

8. The system of claim 7, wherein the geolocation of the magnetic source relative to the one or more DNV sensors is determined based in part on the determined position and dipole moment of the magnetic source.

9. The system of claim 6, wherein the number of DNV sensors is three or more.

10. A geolocating device comprising:

one or more diamond nitrogen vacancy (DNV) sensors; and

a means for activating the DNV sensors, receiving a set of vector measurements from the DNV sensors, and determining an angle of a magnetic source relative to the one or more DNV sensors based on the received set of vector measurements from the DNV sensors.

11. The device of claim 10, wherein the magnetic source is a rotating magnetic source.

12. The device of claim 10, further including a means for determining the position and dipole moment of the magnetic source based on the received set of vector measurements from the DNV sensors.

13. The device of claim 10, wherein the number of DNV sensors is three or more.

14. A system comprising:

one or more diamond nitrogen vacancy (DNV) sensors; and

a controller configured to;

activate the DNV sensors,

receive a set of vector measurements from the DNV sensors, and

determine the position and dipole moment of the magnetic source based on the received set of vector measurements from the DNV sensors.

15. A geolocating device comprising:

one or more diamond nitrogen vacancy (DNV) sensors; and

a means for activating the DNV sensors, receiving a set of vector measurements from the DNV sensors, and determining the position and dipole moment of a magnetic source relative to the one or more DNV sensors based on the received set of vector measurements from the DNV sensors.

16. A system comprising:

one or more magneto-optical defect center sensors; and

a controller configured to;

activate the magneto-optical defect center sensors, receive a set of vector measurements from the magneto-optical defect center sensors, and

determine geolocation of a magnetic source relative to the one or more magneto-optical defect center sensors based on the received set of vector measurements from the magneto-optical defect center sensors.

17. A geolocating device comprising:

one or more magneto-optical defect center sensors; and

a means for activating the magneto-optical defect center sensors, receiving a set of vector measurements from the magneto-optical defect center sensors, and determining the position and dipole moment of a magnetic source relative to the one or more magneto-optical defect center sensors based on the received set of vector measurements from the magneto-optical defect center sensors.

18. A geolocating device comprising:

one or more magneto-optical defect center sensors; and

a means for activating the magneto-optical defect center sensors, receiving a set of vector measurements from the magneto-optical defect center sensors, and determining an angle of a magnetic source relative to the one or more magneto-optical defect center sensors based on the received set of vector measurements from the magneto-optical defect center sensors.