FIELD: navigation, geodesy, and other industries. SUBSTANCE: angular velocity meter is open-circuit set of two optical cavities with different gas mixtures and unidirectional light beams incorporating photodetector; angular velocity is proportional to beam frequency difference and is found from equation $$$, where $$$ is original difference in frequencies under static conditions; $$$ is present value of differential frequency under dynamic conditions; B is laser constant; $$$ is angular velocity; sum or difference signs correspond to clockwise or counterclockwise rotation of equipment. EFFECT: enlarged functional capabilities. 1 dwg
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