Poynting-vector based method for determining the bearing and location of electromagnetic sources

A method of locating one or more radiating electrical sources, comprising:

• sensing along three orthogonal axes to determine electric- and magnetic-field components, one or more broadband signals and one or more quasi-static field signals;
• transforming to the frequency domain, each electric-field axial component (E) and magnetic-field axial component (B) comprised in said signals;
• filtering said transformed signals to enable selection of characteristic one or more predetermined harmonics of said one or more broadband signals;
• and
• calculating one or more Poynting vectors resulting from said filtered one or more predetermined harmonics generated at the same point in time so as remove said quasi-static field and to provide a bearing and location, a spatial mapping of fields, and/or a temporal assessment of said one or more radiating electrical sources.

A sensor apparatus for locating one or more radiating electrical sources, comprising:

• an electric-field (E) and magnetic-field triaxial antenna configured to sense one or more broadband and one or more quasi static fields signals;
• means for converting to the frequency domain, each electric field axial component (E) and magnetic field axial component (B) comprised in said signals;
• means for filtering said converting signals to enable selection of characteristic one or more predetermined harmonics of said one or more broadband sensed fields;
• and
• means for providing one or more Poynting vectors resulting from said filtered one or more predetermined harmonics, wherein said means for providing enables a bearing, a spatial mapping and/or a temporal assessment of one or more radiating electrical sources.

A network for locating one or more radiating electrical sources, comprising:

• a plurality of sensors, wherein each of said sensors further comprise:
• a) an electric-field (E) and magnetic-field triaxial antenna configured to sense one or more broadband and one or more quasi-static field signals;
• b) means for converting to the frequency domain, each electric field axial component (E) and magnetic field axial component (B) comprised in said signals;
• c) means for filtering said converting signals to enable selection of characteristic one or more predetermined harmonics of said one or more broadband sensed fields;
• and
• d) means for providing one or more Poynting vectors resulting from said filtered one or more predetermined harmonics, wherein said means for providing enables a bearing, a spatial mapping and/or a temporal assessment of one or more radiating electrical sources.