Abstract: Owing to many reasons, the natural period, damp and sensitivity of the running seismometers may vary as time goes on. We calibrate the seismometers to get the new values of these parameters. Because we have much more seismic stations than before, the task to calibrate data becomes a very heavy burden. In this article, the authors introduce a new algorithm for processing sine calibration data. Using this algorithm, the computer can process the data automatically.

Key words: Seismometer parameters, Sine calibration, Automatic processing calibration data, Frequency characteristic