An efficient orientation filter for inertial and inertial / magnetic sensor arrays

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Modeling Long-horizon Tasks as Sequential Interaction Landscapes (2020, methodology): “To compute an action symbol we track the IMU signal for each individual block by fusing the acceleration and orientation signal [47] of a single sensor.”
Distributed Analytics and Edge Intelligence: Pervasive Health Monitoring at the Era of Fog Computing (2015, methodology): “Our proposed orientation filtering method in PreProcessor can correct the orientation by rotating the smartphone’s frame of reference and aligning it to the earth frame of reference [21].”
RoNIN: Robust Neural Inertial Navigation in the Wild: Benchmark, Evaluations, & New Methods (2019, background): “A standard sensor fusion algorithm works well for the device orientation estimation [15], [16].”