Single-Anchor 2-D Magnetoquasistatic Position Sensing for Short to Long Ranges Above Ground

Recent developments in long-range magnetoquasistatic position sensing have enabled the decoupling of one-dimensional (1-D) range and orientation of the mobile device to be sensed. By advancing the theory, we demonstrate accurate two-dimensional (2-D) position sensing using a single-anchor system through the decoupling of azimuthal-direction angle of the mobile device. The result is 2-D positioning with a mean geometrical 2-D position error of 0.26 m for ranges up to 30 m using a single-anchor receiver system—not relying on triangulation/trilateration.