Abstract
This work is concerned with a long-period vibrometer using a gyroscope, the experimental device having demonstrated periods of 46 seconds and longer. Several types of the gyro-transducer have previously been built and some of technical problems have been clarified.
The topics in this paper are summarized as follows: 1) The more compact gyro-transducer in arrangement is designed. 2) The sensitivity of the gyro-transducer is further improved. 3) The limitations imposed on the performance are considered. 4) The problem of how other components of input acceleration influences the output signal is discussed. 5) The observation can be carried out without being disturbed by long-term drift due to the thermal effects etc.
