Magnetic anomaly sensing system using two triaxial magnetometer sensors

A magnetic anomaly sensing system, comprising:

• two triaxial magnetometer (TM) sensors with each of said two TM sensors having X,Y,Z magnetic sensing axes, said two TM sensors arranged in a one-dimensional array with respective ones of said X,Y,Z magnetic sensing axes being mutually parallel to one another in said one-dimensional array, said two TM sensors spaced-apart from one another along one of said X,Y,Z sensing axes by a distance D, wherein a midpoint between said two TM sensors along said one of said X,Y,Z sensing axes is located a distance Z from a reference datum;
• and
• a processor coupled to said two TM sensors for implementing an iterative process to include
• generating scalar magnitudes of a magnetic anomaly field measured at each of said two TM sensors, said magnetic anomaly field being associated with a magnetic object,
• generating a scalar range from said two TM sensors to the magnetic object, said scalar range being generated in accordance with
• 1.5
• *
• D
• z
• *
• Z
• c
• *
• [
• ∑
• B
• Δ
• ⁢
• ⁢
• B
• ]
• where ΣB/ΔB is a sum of said scalar magnitudes divided by a difference of said scalar magnitudes,
• performing a plurality of condition tests using said distance D, said distance Z, said scalar range, and said scalar magnitudes
• generating a magnetic dipole moment of the magnetic object using said scalar range and said scalar magnitudes, wherein said magnetic dipole moment and said scalar range define a verified solution set when said plurality of condition tests are satisfied.