Abstract: A stalk sensor comprising a first wand comprising a contact surface at a distal end, a first magnet disposed at a distal end of the first wand, a second wand comprising a contact surface at a distal end, and a second magnet disposed at a distal end of the second wand, the magnet configured to attract the first magnet and thereby the first wand into contact with the second wand at the contact surfaces with the second wand, wherein the first contact surface and the second contact surface are in contact when the stalk sensor is in a home position. The stalk sensor wherein the wands are self-aligning on horizontal and vertical axes.

Abstract: A system may include a receiver, an input digitized data buffer, and a processor. The input digitized data buffer may be configured to accumulate samples of a time domain signal, s(t), from the receiver. The processor may be configured to: remove a confirmed peak from a frequency domain signal, S(f), to produce a corrected frequency domain signal, S?(f); perform an inverse fast Fourier transform to transform the corrected frequency domain signal, S?(f), to a corrected time domain signal, s?(t); perform an inverse window operation on the corrected time domain signal, s?(t), to recover original signal magnitudes; and output digitized data of the corrected time domain signal, s?(t), for signal processing.