Abstract:

On the basis of the L 1 ring laser gyro (RLG), the test and estimation of RLG's errors, including bias, scalefactor, etc., are studied experimentally in this paper. Two kinds of algorithms are compared and analyzed to calculate the random walk coefficient of RLG. According to the data derived from the environmental temperature test, a temperature model of RLG is established and the compensation is also performed. For the first time in China, the Allan variance technique is applied to separate and estimate RLG's errors, which is experimentally proved to be an effective method to evaluate the RLG's performance.

Key words: ring laser g yr o ( RLG), er ro r mo del, Allan v ar iance