Thermally induced error and compensating in open-loop fiber optical gyroscope

摘要

The temperature characteristic of components used in open-loop fiber-optic gyroscpe (FOG) were studied independently and their relevant temperature models of thermal induced error were obtained. A digital compensation method, in which a simple hase sensitive detection electric circuit and a microprocessor were adopted and the error compensation was realized with digital processing technology, was proposed. Experimental study showed that the bias drift of FOG tested was reduced about 80