Abstract: Temperature of FOG drift can be described either with a static model or a dynamic model. Having obtained experimental data by controlling the temperature changing rate around FOG, the two kinds of models were established to study the affects of temperature, temperature changing rate and temperature gradients of FOG drift. The results show that effects of temperature rate and its gradients are not invisible. The compensation accuracy by dynamic model considering both temperature and temperature changing rate or temperature gradients is better than static model by 50 percent. The latter only considers temperature. Therefore the dynamic temperature model should be used for better compensation.

Key words: FOG, gyro drift, temperature, temperature changing rate, temperature gradient