Method of estimating target signals by a dynamical fluxgate sensor
AssigneesTotalforsvarets Forskningsinstitut, The United States of America as represented by the Secretary of the Navy
InventorsJohn W. C. Robinson, Mattias F. Karlsson, Peter Sigray, Adi R. Bulsara, Luca Gammaitoni
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Abstract
A method of estimating target signals (dc or low frequency signals) by a dynamical fluxgate sensor and a low-power fluxgate magnetometer operating according to the method. The sensor is pre-biased with a periodic bias signal in the form of a superposition of a square wave and a triangular wave. The change in residence time statistics in the stable state of the sensor is analyzed for estimating the target signals.
Claims20
A method of estimating target signals (dc or low frequency signals) by a dynamical fluxgate sensor, comprising pre-biasing the sensor with a periodic bias signal including a triangular wave, and analyzing the change in residence time statistics in the stable state of the sensor.
A low-power dynamical magnetometer, comprising a pre-biasing system for prebiasing the magnetometer with a periodic bias signal having a triangular wave, and an analyzing system for analyzing the change in residence time statistics in the stable state of the sensor.
Dependencies are inferred from the claim text.