The recognition of MEMS gyroscope random error terms based on ALLAN variance

This paper analysis the relationship between Allan variance and the MEMS gyroscope random error term, describes the method of forming the Allan variance graph, and uses a group of MEMS gyroscope data to get the allan log-log plot. Then we propose a new method of fitting a straight line, and get three different slope of the straight line, which as a basis of obtaining the three corresponding MEMS gyroscopes random error terms. After comparing with the traditional methods of a least squares fit, we establish the feasibility of this approach.