| 摘要 |
PROBLEM TO BE SOLVED: To efficiently reduce high-frequency noise caused by synchronous detection without using a low-pass filter having a large time constant. SOLUTION: In the vibration gyro having a synchronous detection part 36 for synchronous detecting a sensor signal SS0 output from a sensing element 2 with a reference signal CKD being synchronous with a monitor signal MS, the vibration gyro, in order to remove high-frequency components from a detection signal SS1 after synchronous detection, uses an analog moving average filter 40, which processes the detection signal SS1 in a moving average fashion at every period being synchronous with the reference signal CKD, without using a CR filter having a large time constant. Thereby, unnecessary noise components having the same frequencies as those of a reference signal caused by synchronous detection and its harmonies can be efficiently reduced at the infinite decay range of the analog moving average filter 40. |
