The invention relates to a
fiber-optic
gyroscope temperature self-checking method, in particular to a
fiber-optic
gyroscope temperature self-checking redundancy method, and solves the problems that the temperature compensation information of the existing
fiber-optic
gyroscope completely depends on the output of a temperature sensor, and the output information of the temperature sensor is difficult to monitor and judge in the use process. And the output of the fiber-optic gyroscope is abnormal due to the abnormity of the temperature sensor. The method comprises the following steps: S1, modeling is carried out on Y
waveguide half-wave
voltage and temperature; s2, judging; 2.1, setting a threshold value
delta T; 2.2, the temperature value Ti is monitored in real time; (2.3) comparison: when TYij-Ti is smaller than a threshold value
delta T, executing the step (S3); when TYij-Ti is greater than or equal to a threshold value
delta T, the output of an axial temperature sensor of the detected fiber-optic gyroscope is abnormal, if the fiber-optic gyroscope is in a ground test stage, executing a step 2.4 ', and if the fiber-optic gyroscope is in a flight stage, executing a step 2.5', and S3, compensating the
angular velocity of the detected fiber-optic gyroscope by adopting the temperature value Ti, and outputting the compensated
angular velocity to complete the temperature self-detection of the fiber-optic gyroscope.