Digital filter technology and its application to geomagnetic pulsations in Antarctica

摘要

Digital filter technology is an important method in study of geomagnetic pulsations in Antarctica. The signals received by pulsation magnetometer on the ground include various types of magnetic pulsations. Some types of pulsations or some frequency bands of pulsations and be extracted from the signals by means of digital filter technology because types of pulsations are defined according to their frequency range.