MAGNETIC WAKE DETECTOR
Disclosed are systems, computer-readable mediums, and methods for detecting, using a magnetometer, a magnetic vector of a magnetic field. The magnetic vector of the magnetic field from the magnetometer is received by an electronic processor. A presence of a wake from a flying object is determined based upon the magnetic vector.
1 . A system for detecting a magnetic field comprising:
a magnetometer configured to detect a magnetic vector of a magnetic field;
one or more electronic processors configured to:
receive the magnetic vector of the magnetic field from the magnetometer; and
determine a presence of a wake, based upon the magnetic vector, from a flying object based upon the magnetic field.
2 . The system of claim 1 , wherein to determine the presence of the wake from the flying object the one or more electronic processors are further configured to:
determine a difference between the magnetic vector of the magnetic field with a vector of the magnetic field of the earth, wherein the difference is used to determine the presence of the wake.
3 . The system of claim 1 , wherein the magnetometer has a sensitivity of 0.01 μT.
4 . The system of claim 1 , wherein the range of the magnetometer is one kilometer.
5 . The system of claim 1 , wherein the one or more electronic processors are further configured to receive a plurality of magnetic vector values over time.
6 . The system of claim 5 , wherein the one or more electronic processors are further configured to calculate a speed of the flying object based upon the plurality of magnetic vectors.
7 . The system of claim 5 , wherein the one or more electronic processors are further configured to:
calculate a plurality of possible locations of the flying object based upon the magnetic vector;
eliminate a subset of the possible locations based upon the plurality of magnetic vectors.
8 . The system of claim 5 , wherein the one or more electronic processors are further configured to:
calculate an uniformity of the magnetic field over time based upon the plurality of magnetic vectors; and
identify the flying object based upon the uniformity of the magnetic field over time.
9 . The system of claim 8 , wherein the flying object is a missile.
10 . The system of claim 8 , wherein the flying object is a hypersonic glider.
11 . The system of claim 8 , wherein the flying object is a torpedo.
12 . The system of claim 1 , wherein the magnetometer is passive.
13 . A method comprising:
detecting, using a magnetometer, a magnetic vector of a magnetic field;
receiving, at one or more electronic processors, the magnetic vector of the magnetic field from the magnetometer; and
determining a presence of a wake, based upon the magnetic vector, from a flying object based upon the magnetic field.
14 . The method of claim 13 , wherein determining the presence of the wake from the flying object comprises determining a difference between the magnetic vector of the magnetic field with a vector of the magnetic field of the earth, wherein the difference is used to determine the presence of the wake.
15 . The method of claim 13 , wherein the magnetometer has a sensitivity of 0.01 μT.
16 . The method of claim 13 , wherein the range of the magnetometer is one kilometer.
17 . The method of claim 13 , further comprising receiving a plurality of magnetic vectors over time.
18 . The method of claim 17 , further comprising calculating a speed of the flying object based upon the plurality of magnetic vectors.
19 . The method of claim 17 , further comprising:
calculating a plurality of possible locations of the flying object based upon the magnetic vector;
eliminating a subset of the possible locations based upon the plurality of magnetic vectors.
20 . The method of claim 17 , further comprising:
calculating an uniformity of the magnetic field over time based upon the plurality of magnetic vectors; and
identifying the flying object based upon the uniformity of the magnetic field over time.
21 . The method of claim 20 , wherein the flying object is a missile.
22 . The method of claim 20 , wherein the flying object is a hypersonic glider.
23 . The method of claim 20 , wherein the flying object is a torpedo.
24 . The method of claim 13 , wherein the magnetometer is passive.
25 . A non-transitory computer-readable medium having instructions stored thereon, that when executed by a computing device cause the computing device to perform operations comprising:
receiving a vector of magnetic field from a magnetometer; and
determining a presence of a wake, based upon the vector, from a flying object that based upon the magnetic field.
26 . The non-transitory computer-readable medium of claim 25 , wherein determining the presence of the wake from the flying object comprises determining a difference between the magnetic vector of the magnetic field with a vector of the magnetic field of the earth, wherein the difference is used to determine the presence of the wake.
27 . The non-transitory computer-readable medium of claim 25 , wherein the magnetometer has a sensitivity of 0.01 μT.
28 . The non-transitory computer-readable medium of claim 25 , wherein the range of the magnetometer is one kilometer.
29 . The non-transitory computer-readable medium of claim 25 , wherein the operations further comprise receiving a plurality of magnetic vectors over time.
30 . The non-transitory computer-readable medium of claim 29 , wherein the operations further comprise calculating a speed of the flying object based upon the plurality of magnetic vectors.
31 . The non-transitory computer-readable medium of claim 29 , wherein the operations further comprise:
calculating a plurality of possible locations of the flying object based upon the magnetic vector;
eliminating a subset of the possible locations based upon the plurality of magnetic vectors.
32 . The non-transitory computer-readable medium of claim 29 , wherein the operations further comprise:
calculating an uniformity of the magnetic field over time based upon the plurality of magnetic vectors; and
identifying the flying object based upon the uniformity of the magnetic field over time.
33 . The non-transitory computer-readable medium of claim 32 , wherein the flying object is a missile.
34 . The non-transitory computer-readable medium of claim 32 , wherein the flying object is a hypersonic glider.
35 . The non-transitory computer-readable medium of claim 32 , wherein the flying object is a torpedo.
36 . The non-transitory computer-readable medium of claim 25 , wherein the magnetometer is passive.
37 . A system comprising:
a first magnetometer configured to detect a first magnetic vectors of a magnetic field;
a second magnetometer configured to detect a second magnetic vector of the magnetic field;
one or more electronic processors configured to:
receive the magnetic vectors of the magnetic field from the first and second magnetometers; and
determine a presence of a wake, based upon the magnetic vectors, from a flying object based upon the magnetic vectors.
38 . The system of claim 37 , wherein to determine the presence of the wake from the flying object the one or more electronic processors are further configured to:
determine differences between the vectors of the magnetic fields with a vector of the magnetic field of the earth, wherein the differences are used to determine the presence of the wake.
39 . The system of claim 37 , wherein the magnetometer has a sensitivity of 0.01 μT.
40 . The system of claim 37 , wherein the range of the magnetometer is one kilometer.
41 . The system of claim 37 , wherein the one or more electronic processors are further configured to:
receive a first plurality of magnetic vectors over time from the first magnetometer; and
receive a second plurality of magnetic vectors over time from the second magnetometer.
42 . The system of claim 41 , wherein the one or more electronic processors are further configured to calculate a speed of the flying object based upon the plurality of magnetic vectors from the first and second magnetometers.
43 . The system of claim 41 , wherein the one or more electronic processors are further configured to:
calculate a plurality of possible locations of the flying object based upon the first magnetic vector;
eliminate a first subset of the possible locations based upon the second magnetic vector;
eliminate a subset of the possible locations based upon the plurality of magnetic vectors from the first and second magnetometers.
44 . The system of claim 41 , wherein the one or more electronic processors are further configured to:
calculate an uniformity of the magnetic field over time based upon the plurality of magnetic vectors from the first and second magnetometers; and
identify the flying object based upon the uniformity of the magnetic field over time.
45 . The system of claim 44 , wherein the flying object is a missile.
46 . The system of claim 44 , wherein the flying object is a hypersonic glider.
47 . The system of claim 44 , wherein the flying object is a torpedo.
48 . The system of claim 37 , wherein the magnetometer is passive.
49 . The system of claim 37 , further comprising:
a third magnetometer configured to detect a third magnetic vector of the magnetic field; and
triangulate a location of the flying object based upon the first magnetic vector, the second magnetic vector, and the third magnetic vector.