Experiment Research Of The Fiber Optic Gyroscope's Temperature Characteristics

Inertial Navigation is one of the most crucial national defence technologies . The fiber optic gyroscope is a new type of optical gyroscope . In the overseas the fiber optic gyroscope have been applied to the practical application . In our country the practical application's researchs of the fiber optic gyroscope are beginning to do . This paper pertains to theoretical analyses and experiment researchs of the fiber optic gyroscope's practical application. Basing on the surveis about external and internal development actuality of the fiber optic gyroscope , we make sure to primarily develop the digital closed-loop interferometric fiber optic gyroscope.In this paper firstly the polarize pattern of the lighe-wave which is transmited in the fiber optic gyroscope was analysed by the Jones Matrix . The Optical Matrix Model of the fiber optic gyroscope was established, and the bias of the fiber optic gyroscope was analysed by the Model . Secondly, the temperature characteristics of the sensor coil was researched . A Temperature Distribution Model of the coil was found . According to the Model a method for compensation for thermal-induced drift changes in the fiber optic gyroscope was proposed .Finally, according to the practical work we did some tempareture experiments and analyses to the optical components and the fiber optic gyroscopes . In the experiments we found some methods to filtrate the components, and found the phenomenon that the fiber optic gyroscope's performance is better at low temperature (eg. between 0 C to 20 C) than at high temperature (40 C) . The conclusion of this paper can be used for reference for the continued research .