**3. Dynamic Responses Monitored by MIMU**

It is appropriate to monitor dynamic response using MIMU due to the high sampling rate, which can reach up to 100 Hz–200 Hz. The displacement, velocity, and torsion angle responses can be calculated by mechanical arrangemen<sup>t</sup> using MIMU. However, lowcost MIMU has a relatively low measurement accuracy with a large gyroscope drift. By processing and analyzing the observed time-series data of accelerometer and gyroscope, real-time dynamic responses of offshore oil platforms can be provided. The monitoring accuracy can also be improved.
