| 摘要 |
A ring laser gyro employing a periodic primary dither to eliminate lock-in at low rates of rotation and a random secondary dither to eliminate residual lock-in. The primary dither is provided by a dither motor (36) coupled to the body (10) of the gyro and responsive to a sine wave drive signal to vibrate the gyro body in a rotational mode. The secondary dither is provided by randomly vibrating two of the laser gyro mirrors (28, 30) in a direction perpendicular to the face of the mirrors and in a complementary manner to maintain constant the length of the path traveled by the beams. |
