Patent ID: 9158024
Filing Date: 2015-10-13
Classification: G01V

Abstract:
1. A sonde locator comprising: a plurality of electromagnetic coil sensors configured to measure an electromagnetic field magnitude and phase generated along at least one dipole transmitter axis of a target sonde, the plurality of electromagnetic coil sensors being at an arbitrary orientation to the target sonde, the target sonde being located separately from the sonde locator; circuitry coupled to receive signals from the plurality of electromagnetic coil sensors and provide quadrature signals indicating a set of measured complex electromagnetic field strengths related to each electromagnetic coil sensor at a receiver and along the at least one dipole transmitter axis; a position locator that determines a precise position of the sonde locator; a processor coupled to receive the complex electromagnetic field strength and phase and the position and calculate parameter values related to the target sonde; and a display coupled to the processor, the display indicating to a user the values related to the target sonde, wherein the processor includes software for performing the following: