Based on temperature compensation of one miniaturized laser gyro (strap-down inertial navigation system) SINS, four different models of temperature compensation were developed, and the compensation result of three temperature methods were analyzed and compared. The experimental results show that the temperature rate is invisible, and the compensation accuracy of dynamic model considering both temperature and temperature changing rate is better than that of the static model. Moreover, in order to test the stability of the SINS and temperature compensation models, a research was performed again on its temperature characteristic five months later, and the results show that SINS and the model present high stability, and meet the engineering applicaitons.
