New Four-Frequency Zeeman Laser Gyroscope with a Nonplanar Symmetric Cavity, its Parameters and Operation

In our work we estimate the maximum achievable accuracy of a four-frequency Zeeman ring laser gyroscope (ZLG) with a nonplanar symmetric cavity with a perimeter of 28 cm. Measurements of the noise component of a four-frequency ZLG signal are presented and a compared with a two-frequency ZLG. The influence of the magnetic field on the errors of the four-frequency ZLG is estimated. A method of compensating the influence of external magnetic fields is presented, as well as the corresponding system for regulating the perimeter and other parameters of the gyroscope. The efficiency of using additional output signals of the four-frequency ZLG, obtained from the interference of waves with the same direction of the cavity propagation, is considered. Additionally, the analysis of the factors prohibiting the achievement of the maximum possible measurement accuracy in the four-frequency ZLG is carried out, the most promising directions of modernization of the four-frequency ZLG are proposed.