Measuring device for measuring a vectorial physical quantity (x), comprising - at least a first and a second sensor (S1, S2) each arranged for measuring a component of the vectorial physical quantity (x), and for generating a respective sense signal (y1, y2), said sense signals each including a first part indicative for the component of the measured quantity (x) and a second, noise part, said sensors having an Allan variance curve with a minimum value for a particular integration time Tmin, said Allan variance curve having a first tangent line to a portion of the curve for which the integration time approaches 0, and having a second, horizontal, tangent line of constant standard deviation corresponding to said Allan minimum value, said first and said second tangent line having an intersection point for a second particular integration time, characterized by - an actuator arranged for causing a relative rotation between said at least a first and a second sensor, - a noise extraction unit arranged for receiving the sense signals (y1, y2) and for providing a difference signal (r) indicative for a weighted difference between the sense signals (y1, y2), said weighted difference being substantially independent of the vectorial physical quantity (x), said noise extraction unit comprising, - a signal weighting unit arranged for weighting the sense signals (y1, y2) dependent on the relative rotation, and for providing mutually weighted sense signals (y1r, y2), the signal weighting unit having at least one multiplication unit for multiplying one of the sense signals with a weighting factor, - a signal compensation unit, arranged for receiving the mutually weighted sense signals (y1r, y2) from the signal weighting unit, and for providing a difference signal (r) indicative for a difference between the mutually weighted sense signals, - a low frequency noise estimator arranged for estimating a low frequency noise component from the difference signal (r) and from information about the relative rotation (α) between the sensors and for generating an estimated noise signal indicative for the value of said noise component, said low frequency noise estimator having an effective integration time, which is at least two times a sample time with which the sense signals are obtained, which effective integration time is less than the smallest particular integration time of the sensors comprised in the measuring device and which effective integration time is at most two times said second integration time, - a correction unit arranged for receiving the estimated noise signal and the output signal of one of the sensors and for providing an output signal indicative for a sensed value of the vectorial physical quantity corrected for the noise as estimated by said low frequency noise estimator. - at least a first and a second sensor (S1, S2) each arranged for measuring a component of the vectorial physical quantity (x), and for generating a respective sense signal (y1, y2), said sense signals each including a first part indicative for the component of the measured quantity (x) and a second, noise part, said sensors having an Allan variance curve with a minimum value for a particular integration time Tmin, said Allan variance curve having a first tangent line to a portion of the curve for which the integration time approaches 0, and having a second, horizontal, tangent line of constant standard deviation corresponding to said Allan minimum value, - an actuator arranged for causing a relative rotation between said at least a first and a second sensor, - a noise extraction unit arranged for receiving the sense signals (y1, y2) and for providing a difference signal (r) indicative for a weighted difference between the sense signals (y1, y2), said weighted difference being substantially independent of the vectorial physical quantity (x), said noise extraction unit comprising, - a signal weighting unit arranged for weighting the sense signals (y1, y2) dependent on the relative rotation, and for providing mutually weighted sense signals (y1r, y2), the signal weighting unit having at least one multiplication unit for multiplying one of the sense signals with a weighting factor, - a signal compensation unit, arranged for receiving the mutually weighted sense signals (y1r, y2) from the signal weighting unit, and for providing a difference signal (r) indicative for a difference between the mutually weighted sense signals, - a low frequency noise estimator arranged for estimating a low frequency noise component from the difference signal (r) and from information about the relative rotation (α) between the sensors and for generating an estimated noise signal indicative for the value of said noise component, said low frequency noise estimator having an effective integration time, which is at least two times a sample time with which the sense signals are obtained, which effective integration time is less than the smallest particular integration time of the sensors comprised in the measuring device and which effective integration time is at most two times said second integration time, - a correction unit arranged for receiving the estimated noise signal and the output signal of one of the sensors and for providing an output signal indicative for a sensed value of the vectorial physical quantity corrected for the noise as estimated by said low frequency noise estimator.