gyroscopic measurements are provided , by a system comprising a vibrating gyroscope , in the form of an output signal . the vibrating gyroscope provides an original measurement signal . a periodic control signal is applied to it over a time period , which signal is suitable : for rotating the geometric position of vibration in a first direction , during a part of the time period ; and for rotating the geometric position of vibration in a second direction opposite to the first direction , during the other part of the time period ; said control signal having a zero mean over said time period and exhibiting portions of signal at high frequency relative to the output signal ; said output signal being based on a corrected signal emanating from the original measurement signal ; in which the corrected signal is based on an identification of errors made during the signal portions at high frequency .