Aerospace Instrument-Making Annotation << Back Selective Mechanism for Solving the Orientation Problem With Implementation on Raspberry Pi On-Board Computers Danilenko N.V., Maslennikov A.L., Dolgova Yu.S. The paper considers a selective approach to compute orientation parameters of a micromechanical inertial measurement unit (IMU). Three algorithms are of interest are considered: the classical navigation algorithm, as well as the Mahony and Madgwick fi lters. Criteria for selective choose the most reliable algorithmic solution to the orientation problem are given, considering the pre-formed priorities. To verify proposed in paper theoretical approach an experiment was carried out. In the experiment a comparison of obtained data from two IMUs: Analog Device ADIS16488 and WaveShare Sense Hat (c) belonging to different accuracy classes was made. A Raspberry Pi on-board computer is used for data processing. The results of the experiment showed the applicability of the proposed approach with the proposed criteria, as well as that for sensors with smaller instrumental errors, such as ADIS16488, the three considered algorithms are applicable, and for less accurate ones, such as WaveShare Sense Hat (c), it is more reliable to use the Madgwick and Mahony filters. Keywords: IMU, MEMS, navigation algorithm, orientation algorithm, Madgwick fi lter, Mahony filter. DOI: 10.25791/aviakosmos.1.2025.1455 Pp. 32-43.