Inertial Measurement Unit (IMU)


Signal processing

In order to get accurate data from the IMU, it is necessary to have a good signal processing pipeline, optimized for the application. An accurate calibration of the MTi by Xsens provides a model of the internal sensors. When operational, the signal processing then consists of 3 blocks: sampling (at a high frequency), a carefully designed digital low pass filtering in order to prevent aliasing, application of the calibration model and Strapdown Integration (SDI) at 2 kHz. When this entire signal processing pipeline is designed in a proper way, the data will have a high fidelity. Tests by Xsens confirm that this is the case for the MTi IMUs .

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Typical applications

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