On the application of Allan variance method for Ring Laser Gyro performance characterization
Citations Over Time
Abstract
This report describes the method of Allan variance and its application to the characterization of a Ring Laser Gyro`s (RLG) performance. Allan variance, a time domain analysis technique, is an accepted IEEE standard for gyro specifications. The method was initially developed by David Allan of the National Bureau of Standards to quantify the error statistics of a Cesium beam frequency standard employed as the US Frequency Standards in 1960`s. The method can, in general, be applied to analyze the error characteristics of any precision measurement instrument. The key attribute of the method is that it allows for a finer, easier characterization and identification of error sources and their contribution to the overall noise statistics. This report presents an overview of the method, explains the relationship between Allan variance and power spectral density distribution of underlying noise sources, describes the batch and recursive implementation approaches, validates the Allan variance computation with a simulation model, and illustrates the Allan variance method using data collected from several Honeywell LIMU units.
Related Papers
- → Practical Approaches to Allan Deviation Analysis of Low-Cost MEMS Inertial Sensors(2023)11 cited
- → The Corrected Allan Variance: Stability Analysis of Frequency Measurements With Missing Data(2019)9 cited
- → Measurement of Allan variance and phase noise at fractions of a millihertz(1990)8 cited
- IMU error analysis based on a simplified allan variance method(2010)
- → Comparison of Random Error Analysis Methods for Fiber Optic Gyro Based on Allan Variance(2017)