Gyroscope for the monitoring of angle random walk

摘要

PROBLEM TO BE SOLVED: To provide a gyroscope which determines an angular velocity output, by reducing unwanted signal components relating to actual rotation and vibration information and an error guided by modulation, such as, optical glitch from IOC.;SOLUTION: The gyroscope 10 includes a first demodulator 22, configured to determine an angular velocity signal by demodulating an angular velocity measurement at a first bias modulation frequency and a second demodulator 24 configured to provide a signal, including ARW information by demodulating an angular velocity measurement at a second bias modulation frequency. The gyroscope, further, includes an ARW estimator 25 providing an output proportional to an ARW to be stored in a memory. The second bias modulation frequency is an even-order harmonic of the first bias modulation frequency. The gyroscope includes a filter for filtering the angular velocity measurement input of the second demodulator.;COPYRIGHT: (C)2010,JPO&INPIT